FR25922E - Improvements made to electric wave filters - Google Patents

Improvements made to electric wave filters

Info

Publication number: FR25922E
Authority: FR; France
Prior art keywords: electric wave; improvements made; wave filters; filters; electric
Prior art date: 1921-01-15
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

Other languages

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.)

Thales SA

Original Assignee

Le Materiel Telephonique Thomson CSF

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.)

1921-01-15

Filing date

1922-01-12

Publication date

1923-06-22

1922-01-12 Application filed by Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF

1923-06-22 Application granted granted Critical

1923-06-22 Publication of FR25922E publication Critical patent/FR25922E/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/075—Ladder networks, e.g. electric wave filters
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/04—Feeding or distributing of lump or pulverulent fuel to combustion apparatus for locomotive boiler furnaces
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/175—Series LC in series path
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/1775—Parallel LC in shunt or branch path
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H2260/00—Theory relating to impedance networks

Landscapes

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Combustion & Propulsion (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Power Engineering (AREA)
Control Of Motors That Do Not Use Commutators (AREA)
Filters And Equalizers (AREA)
Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Radio Relay Systems (AREA)

FR25922D 1921-01-15 1922-01-12 Improvements made to electric wave filters Expired FR25922E (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US437527A US1538964A (en)	1921-01-15	1921-01-15	Wave filter

Publications (1)

Publication Number	Publication Date
FR25922E true FR25922E (en)	1923-06-22

Family

ID=26685809

Family Applications (3)

Application Number	Title	Priority Date	Filing Date
FR517686A Expired FR517686A (en)	1921-01-15	1920-06-23	Improvements made to electric wave filters
FR25346D Expired FR25346E (en)	1921-01-15	1921-09-05	Improvements made to electric wave filters
FR25922D Expired FR25922E (en)	1921-01-15	1922-01-12	Improvements made to electric wave filters

Family Applications Before (2)

Application Number	Title	Priority Date	Filing Date
FR517686A Expired FR517686A (en)	1921-01-15	1920-06-23	Improvements made to electric wave filters
FR25346D Expired FR25346E (en)	1921-01-15	1921-09-05	Improvements made to electric wave filters

Country Status (5)

Country	Link
US (1)	US1538964A (en)
DE (2)	DE464768C (en)
FR (3)	FR517686A (en)
GB (1)	GB142115A (en)
NL (1)	NL11866C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB475490A (en) *	1936-02-21	1937-11-22	William Spencer Percival	Improvements in and relating to electric wave filters
DD106667A1 (en) *	1973-09-27	1974-06-20	Werner Nessmann	METHOD FOR ALIGNING, STABILIZING AND ORIENTING RIVETS OF STRUCTURES KNITTED ON THE ROUNDING MACHINE AND THE SAME OBJECTS AND DEVICE FOR CARRYING OUT SAID METHOD
US8848337B2 (en)	2011-02-01	2014-09-30	John R. Koza	Signal processing devices having one or more memristors

1920
- 1920-04-21 GB GB11066/20A patent/GB142115A/en not_active Expired
- 1920-05-04 DE DEB93959D patent/DE464768C/en not_active Expired
- 1920-06-23 FR FR517686A patent/FR517686A/en not_active Expired
- 1920-10-30 NL NL16972A patent/NL11866C/xx active
1921
- 1921-01-15 US US437527A patent/US1538964A/en not_active Expired - Lifetime
- 1921-09-05 FR FR25346D patent/FR25346E/en not_active Expired
1922
- 1922-01-12 FR FR25922D patent/FR25922E/en not_active Expired
- 1922-01-15 DE DEB103155D patent/DE477985C/en not_active Expired

Also Published As

Publication number	Publication date
FR517686A (en)	1921-05-10
GB142115A (en)	1921-01-13
FR25346E (en)	1923-01-24
DE477985C (en)	1929-06-28
US1538964A (en)	1925-05-26
DE464768C (en)	1928-09-08
NL11866C (en)	1924-10-15

Publication	Publication Date	Title
FR555572A (en)	1923-07-03	Improvements made to switches
FR25346E (en)	1923-01-24	Improvements made to electric wave filters
FR772135A (en)	1934-10-23	Improvements to electric wave filters
FR557044A (en)	1923-08-01	Improvements made to electric wave filters
FR791876A (en)	1935-12-18	Improvements to electric wave filters
FR583770A (en)	1925-01-21	Improvements to electric wave filters
FR818145A (en)	1937-09-18	Improvements to electric wave filters
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FR544025A (en)	1922-09-13	Improvements to crankshafts
FR524727A (en)	1921-09-09	Improvements to induction devices
FR548607A (en)	1923-01-19	Improvements to air filters
FR796611A (en)	1936-04-11	Improvements to electric wave filters
FR551937A (en)	1923-04-17	Improvements to sound wave concentrators
FR812074A (en)	1937-05-29	Improvements to electric wave filters
FR549050A (en)	1923-01-31	Improvements to fixed electrical induction devices
FR544181A (en)	1922-09-15	Improvements to sweepers
FR535868A (en)	1922-04-22	Improvements to insulators
FR544715A (en)	1922-09-27	Improvements made to electric clocks
FR27158E (en)	1924-05-19	Improvements to radio-receivers
FR559341A (en)	1923-09-13	Improvements to seleno-radio-dosimeter
FR570251A (en)	1924-04-26	Improvements to electric capacitors
FR545350A (en)	1922-10-10	Improvements made to suspended insulators
FR536808A (en)	1922-05-10	Improvements to binders and bibloraptors
FR546597A (en)	1922-11-16	Improvements to electric oscillators
DK38058C (en)	1927-10-17	Electric Wave Filter.