FI73532B - DUBBELFREKVENT STOELDBEKAEMPNINGSSYSTEM. - Google Patents

DUBBELFREKVENT STOELDBEKAEMPNINGSSYSTEM.

Info

Publication number: FI73532B
Authority: FI; Finland
Prior art keywords: stoeldbekaempningssystem; dubbelfrekvent; dubbelfrekvent stoeldbekaempningssystem
Prior art date: 1980-10-09

Application number

FI821956A

Other languages

Finnish (fi)

Other versions

FI821956A0 (en

FI73532C (en

Inventor

Harold B Williams

Original Assignee

Deterrent Tech Corp

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1980-10-09

Filing date

1982-06-02

Publication date

1987-06-30

1982-06-02 Application filed by Deterrent Tech Corp filed Critical Deterrent Tech Corp

1982-06-02 Publication of FI821956A0 publication Critical patent/FI821956A0/en

1987-06-30 Application granted granted Critical

1987-06-30 Publication of FI73532B publication Critical patent/FI73532B/en

1987-10-09 Publication of FI73532C publication Critical patent/FI73532C/en

Classifications

- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2405—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used
- G08B13/2422—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using acoustic or microwave tags
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
- G08B13/2468—Antenna in system and the related signal processing
- G08B13/2471—Antenna signal processing by receiver or emitter

Landscapes

Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Automation & Control Theory (AREA)
Computer Security & Cryptography (AREA)
Electromagnetism (AREA)
General Physics & Mathematics (AREA)
Signal Processing (AREA)
Acoustics & Sound (AREA)
Burglar Alarm Systems (AREA)

FI821956A 1980-10-09 1982-06-02 Double frequency anti-theft system. FI73532C (en)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
US19557280A	1980-10-09	1980-10-09
US19557280		1980-10-09
US8101335		1981-10-01
PCT/US1981/001335 WO1982001437A1 (en)	1980-10-09	1981-10-01	Dual frequency anti-theft system

Publications (3)

Publication Number	Publication Date
FI821956A0 FI821956A0 (en)	1982-06-02
FI73532B true FI73532B (en)	1987-06-30
FI73532C FI73532C (en)	1987-10-09

Family

ID=22721923

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI821956A FI73532C (en)	1980-10-09	1982-06-02	Double frequency anti-theft system.

Country Status (12)

Country	Link
EP (1)	EP0062056A4 (en)
JP (1)	JPH0353678B2 (en)
AU (1)	AU552568B2 (en)
BR (1)	BR8108829A (en)
CA (1)	CA1190970A (en)
DK (1)	DK161172C (en)
ES (1)	ES8207351A1 (en)
FI (1)	FI73532C (en)
IT (1)	IT1142881B (en)
NZ (1)	NZ198497A (en)
WO (1)	WO1982001437A1 (en)
ZA (1)	ZA816937B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0091581B1 (en) *	1982-04-12	1988-05-18	Ici Americas Inc.	Crossed beam high frequency anti-theft system
CA1236542A (en) *	1983-08-02	1988-05-10	Harold B. Williams	Electronic article surveillance system having microstrip antennas
US5349332A (en) *	1992-10-13	1994-09-20	Sensormatic Electronics Corportion	EAS system with requency hopping
US5347280A (en) *	1993-07-02	1994-09-13	Texas Instruments Deutschland Gmbh	Frequency diversity transponder arrangement
US5831530A (en) *	1994-12-30	1998-11-03	Lace Effect, Llc	Anti-theft vehicle system
US5798693A (en) *	1995-06-07	1998-08-25	Engellenner; Thomas J.	Electronic locating systems
US8358209B2 (en) *	2005-06-03	2013-01-22	Sensomatic Electronics, LLC	Techniques for detecting RFID tags in electronic article surveillance systems using frequency mixing

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NO126975B (en) *	1967-03-30	1973-04-16	John Welsh
US3631484A (en) *	1969-07-30	1971-12-28	Microlab Fxr	Harmonic detection system
US3707711A (en) *	1970-04-02	1972-12-26	Peter Harold Cole	Electronic surveillance system
US3895368A (en) *	1972-08-09	1975-07-15	Sensormatic Electronics Corp	Surveillance system and method utilizing both electrostatic and electromagnetic fields
GB1586069A (en) *	1976-11-15	1981-03-18	Nedap Nv	Detection systems
NL7804417A (en) *	1977-04-28	1978-10-31	Parmeko Ltd	DETECTION SYSTEM FOR MONITORING THE POSITION OF AN ARTICLE IN A CONTROL ZONE.
US4139844A (en) *	1977-10-07	1979-02-13	Sensormatic Electronics Corporation	Surveillance method and system with electromagnetic carrier and plural range limiting signals
ZA7994B (en) *	1978-01-11	1980-01-30	Tag Radionics Ltd	Presence sensing system
US4249167A (en) *	1979-06-05	1981-02-03	Magnavox Government And Industrial Electronics Company	Apparatus and method for theft detection system having different frequencies

1981
- 1981-09-28 CA CA000386839A patent/CA1190970A/en not_active Expired
- 1981-09-29 NZ NZ198497A patent/NZ198497A/en unknown
- 1981-10-01 EP EP19810902853 patent/EP0062056A4/en not_active Ceased
- 1981-10-01 AU AU77219/81A patent/AU552568B2/en not_active Ceased
- 1981-10-01 JP JP56503332A patent/JPH0353678B2/ja not_active Expired - Lifetime
- 1981-10-01 WO PCT/US1981/001335 patent/WO1982001437A1/en not_active Application Discontinuation
- 1981-10-01 BR BR8108829A patent/BR8108829A/en unknown
- 1981-10-07 ZA ZA816937A patent/ZA816937B/en unknown
- 1981-10-08 ES ES506117A patent/ES8207351A1/en not_active Expired
- 1981-10-08 IT IT49451/81A patent/IT1142881B/en active
1982
- 1982-06-02 FI FI821956A patent/FI73532C/en not_active IP Right Cessation
- 1982-06-09 DK DK258082A patent/DK161172C/en not_active IP Right Cessation

Also Published As

Publication number	Publication date
EP0062056A1 (en)	1982-10-13
CA1190970A (en)	1985-07-23
IT8149451A0 (en)	1981-10-08
DK258082A (en)	1982-06-09
ZA816937B (en)	1982-11-24
JPS57501550A (en)	1982-08-26
IT1142881B (en)	1986-10-15
FI821956A0 (en)	1982-06-02
AU7721981A (en)	1982-05-11
FI73532C (en)	1987-10-09
JPH0353678B2 (en)	1991-08-15
AU552568B2 (en)	1986-06-05
WO1982001437A1 (en)	1982-04-29
DK161172C (en)	1991-11-25
ES506117A0 (en)	1982-09-01
NZ198497A (en)	1985-08-30
BR8108829A (en)	1982-08-24
DK161172B (en)	1991-06-03
EP0062056A4 (en)	1985-06-06
ES8207351A1 (en)	1982-09-01

Publication	Publication Date	Title
FI77044B (en)	1988-09-30	SIDOKEDJADE L-ASPARTYL-D-AMINOSYRA- DIPEPTIDSYROR.
NO160833C (en)	1989-06-07	SKJAEREINNSATS.
NL189864C (en)	1993-08-16	SEATBAND.
NO812861L (en)	1982-03-03	NOEDSTROEMAGGREGAT.
ATE15191T1 (en)	1985-09-15	ANTHYPERTENSIVES.
NO813092L (en)	1982-03-16	VARMEOVERFOERINGSANORDNING.
NO811985L (en)	1982-01-25	EMULGERINGSANORDNING.
ES267107Y (en)	1983-09-16	SEGUETA.
NO153950C (en)	1986-06-18	MIKROBOELGEOVN.
NO811789L (en)	1981-12-07	Blowout-PREVENT.
NO810297L (en)	1981-07-30	CYKLOHEKSENDERIVATER.
NO811736L (en)	1981-11-23	BOELGEFORMGENERATOR.
NO813370L (en)	1982-04-07	NOEDKABELGRIPER.
BE888474A (en)	1981-08-17	1OMEGA-HYDROXY-2 BETA-FLUOROCHOLECALCIFEROL.
FI73924B (en)	1987-08-31	LOESBLADSPAERM.
FI73532B (en)	1987-06-30	DUBBELFREKVENT STOELDBEKAEMPNINGSSYSTEM.
NO813111L (en)	1982-03-15	Slurry-EXPLOSIVES.
NO802122L (en)	1981-10-05	TELEFONHAANDAPPARAT.
IT8026945A0 (en)	1980-12-24	KETOHYDROXYIMININOCEPHALOSPORINS.
IT8023769A0 (en)	1980-07-29	PYRETROIDS.
IT8026909A0 (en)	1980-12-23	RACLA.
ATE9650T1 (en)	1984-10-15	MACROLIDS.
ATE8628T1 (en)	1984-08-15	ISOXAZOLYLINDOLAMINE.
ATE18802T1 (en)	1986-04-15	PHOTOKNIFE.
ATE17118T1 (en)	1986-01-15	2-METHYLSELENO-BENZAMIDE.

Legal Events

Date	Code	Title	Description
2004-08-31	MM	Patent lapsed	Owner name: DETERRENT TECHNOLOGY CORPORATION