FR708795A - Improvements to handling devices used in high frequency circuits - Google Patents

Improvements to handling devices used in high frequency circuits

Info

Publication number: FR708795A
Authority: FR; France
Prior art keywords: high frequency; devices used; handling devices; frequency circuits; circuits
Prior art date: 1930-03-20
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.)

Marconis Wireless Telegraph Co Ltd

BAE Systems Electronics Ltd

Original Assignee

Marconis Wireless Telegraph Co Ltd

Marconi Co Ltd

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.)

1930-03-20

Filing date

1931-01-03

Publication date

1931-07-28

1931-01-03 Application filed by Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd

1931-07-28 Application granted granted Critical

1931-07-28 Publication of FR708795A publication Critical patent/FR708795A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
- H04L27/04—Modulator circuits; Transmitter circuits

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Amplifiers (AREA)
Microwave Amplifiers (AREA)

FR708795D 1930-03-20 1931-01-03 Improvements to handling devices used in high frequency circuits Expired FR708795A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB8988/30A GB351051A (en)	1930-03-20	1930-03-20	Improvements in or relating to keying arrangements for use in high frequency circuits

Publications (1)

Publication Number	Publication Date
FR708795A true FR708795A (en)	1931-07-28

Family

ID=9863189

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR708795D Expired FR708795A (en)	1930-03-20	1931-01-03	Improvements to handling devices used in high frequency circuits

Country Status (5)

Country	Link
US (1)	US1938631A (en)
BE (1)	BE378336A (en)
DE (2)	DE538841C (en)
FR (1)	FR708795A (en)
GB (1)	GB351051A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE755785C (en) *	1933-03-16	1952-03-31	Marconi Wireless Telegraph Co	Arrangement for the automatic activation of a transmitter with the help of rectified modulation oscillations

1930
- 1930-03-20 GB GB8988/30A patent/GB351051A/en not_active Expired
1931
- 1931-01-03 FR FR708795D patent/FR708795A/en not_active Expired
- 1931-03-06 US US520587A patent/US1938631A/en not_active Expired - Lifetime
- 1931-03-19 BE BE378336D patent/BE378336A/xx unknown
- 1931-03-20 DE DEM114597D patent/DE538841C/en not_active Expired
1932
- 1932-08-19 DE DEM123937D patent/DE590808C/en not_active Expired

Also Published As

Publication number	Publication date
US1938631A (en)	1933-12-12
BE378336A (en)	1931-04-30
GB351051A (en)	1931-06-22
DE538841C (en)	1931-11-17
DE590808C (en)	1934-01-11

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