CA804758A - Acoustic intruder detection systems - Google Patents

Acoustic intruder detection systems

Info

Publication number: CA804758A
Authority: CA; Canada
Prior art keywords: detection systems; intruder detection; acoustic; acoustic intruder; systems
Prior art date: 1969-01-21
Legal status (The legal status 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 status listed.): Expired

Application number

CA804758A

Inventor

C. Foster Leigh

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Zenith Electronics LLC

Original Assignee

Zenith Radio Corp

Publication date

1969-01-21

1969-01-21 Application granted granted Critical

1969-01-21 Publication of CA804758A publication Critical patent/CA804758A/en

Status Expired legal-status Critical Current

Links

CA804758A Acoustic intruder detection systems Expired CA804758A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA804758T

Publications (1)

Publication Number	Publication Date
CA804758A true CA804758A (en)	1969-01-21

Family

ID=36275256

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA804758A Expired CA804758A (en)			Acoustic intruder detection systems

Country Status (1)

Country	Link
CA (1)	CA804758A (en)

0
- CA CA804758A patent/CA804758A/en not_active Expired

Similar Documents

Publication	Publication Date	Title
AU465571B2 (en)	1975-10-02	Intrusion detection system
CA929335A (en)	1973-07-03	Temperature-limit detection
CA938385A (en)	1973-12-11	Fire detection system
CA946493A (en)	1974-04-30	Signal discriminating system
AU1080670A (en)	1971-08-05	Laser arrow detection system
AU475279B2 (en)	1976-08-19	Intrusion detection system
CA931247A (en)	1973-07-31	Touch-wire detection systems
CA927752A (en)	1973-06-05	Annunciator system
CA926969A (en)	1973-05-22	Detecting system
CA871366A (en)	1971-05-18	Alarm means
CA924412A (en)	1973-04-10	Acoustic direction sensing systems
AU452416B2 (en)	1974-09-05	Improvements in fire detection systems
CA804758A (en)	1969-01-21	Acoustic intruder detection systems
CA816903A (en)	1969-07-01	Perimeter intrusion detection system
CA855377A (en)	1970-11-03	Intruder detection system
CA828997A (en)	1969-12-09	Detection system
CA719350A (en)	1965-10-05	Intruder detection system
CA813630A (en)	1969-05-27	Back-up alarm sounder
IL31466A0 (en)	1971-12-29	An intruder detection system
CA819302A (en)	1969-07-29	Multiple alarm system
AU439293B2 (en)	1971-03-04	Sound discriminator alarm system
CA777993A (en)	1968-02-06	Intrusion detection system
CA806406A (en)	1969-02-18	Acoustic system
CA848063A (en)	1970-07-28	Burglar alarm system
CA817666A (en)	1969-07-15	Fire alarm