FR45431E - Improvements to transmission systems - Google Patents

Improvements to transmission systems

Info

Publication number: FR45431E
Authority: FR; France
Prior art keywords: transmission systems; systems; transmission
Prior art date: 1932-09-30
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.)

Lignes Telegraphiques et Telephoniques LTT SA

Original Assignee

Lignes Telegraphiques et Telephoniques LTT SA

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.)

1932-09-30

Filing date

1934-09-20

Publication date

1935-09-04

1934-09-20 Application filed by Lignes Telegraphiques et Telephoniques LTT SA filed Critical Lignes Telegraphiques et Telephoniques LTT SA

1935-09-04 Application granted granted Critical

1935-09-04 Publication of FR45431E publication Critical patent/FR45431E/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/04—Control of transmission; Equalising
- H04B3/06—Control of transmission; Equalising by the transmitted signal
- H04B3/08—Control of transmission; Equalising by the transmitted signal in negative-feedback path of line amplifier

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Amplifiers (AREA)

FR45431D 1932-09-30 1934-09-20 Improvements to transmission systems Expired FR45431E (en)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
US635525A US2002499A (en)	1932-09-30	1932-09-30	Wave translation system
US690283A US2017180A (en)	1932-09-30	1933-09-20	Communication amplifier with feed-back
GB24440/34A GB430461A (en)	1932-09-30	1934-08-24	Amplifying systems for electric waves

Publications (1)

Publication Number	Publication Date
FR45431E true FR45431E (en)	1935-09-04

Family

ID=10211765

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
FR762210D Expired FR762210A (en)	1932-09-30	1933-09-27	Improvements to transmission systems
FR45431D Expired FR45431E (en)	1932-09-30	1934-09-20	Improvements to transmission systems

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
FR762210D Expired FR762210A (en)	1932-09-30	1933-09-27	Improvements to transmission systems

Country Status (5)

Country	Link
US (2)	US2002499A (en)
CH (1)	CH183822A (en)
FR (2)	FR762210A (en)
GB (1)	GB430461A (en)
NL (1)	NL41083C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2615997A (en) *	1946-12-13	1952-10-28	Kellogg Switchboard & Supply	Telephone repeater
US2629024A (en) *	1950-12-29	1953-02-17	Bell Telephone Labor Inc	Unbalanced-to-ground two-to-fourwire connection
GB987885A (en) *	1962-02-15	1965-03-31	Ass Elect Ind	Improvements in and relating to amplifier feed-back circuits

1932
- 1932-09-30 US US635525A patent/US2002499A/en not_active Expired - Lifetime
1933
- 1933-09-20 US US690283A patent/US2017180A/en not_active Expired - Lifetime
- 1933-09-27 FR FR762210D patent/FR762210A/en not_active Expired
1934
- 1934-08-24 GB GB24440/34A patent/GB430461A/en not_active Expired
- 1934-09-13 NL NL70722A patent/NL41083C/xx active
- 1934-09-20 FR FR45431D patent/FR45431E/en not_active Expired
- 1934-10-11 CH CH183822D patent/CH183822A/en unknown

Also Published As

Publication number	Publication date
FR762210A (en)	1934-04-06
US2017180A (en)	1935-10-15
GB430461A (en)	1935-06-19
US2002499A (en)	1935-05-28
NL41083C (en)	1937-07-15
CH183822A (en)	1936-04-30

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