FR906932A - Electric wave transmission systems - Google Patents

Electric wave transmission systems

Info

Publication number
FR906932A
FR906932A FR906932DA FR906932A FR 906932 A FR906932 A FR 906932A FR 906932D A FR906932D A FR 906932DA FR 906932 A FR906932 A FR 906932A
Authority
FR
France
Prior art keywords
wave transmission
electric wave
transmission systems
systems
electric
Prior art date
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
French (fr)
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.)
Filing date
Publication date
Application filed by Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR906932A publication Critical patent/FR906932A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems
    • H04B17/401—Monitoring; Testing of relay systems with selective localization
    • H04B17/402—Monitoring; Testing of relay systems with selective localization using different frequencies
    • H04B17/404—Monitoring; Testing of relay systems with selective localization using different frequencies selected by local filters

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
FR906932D 1940-07-09 1944-09-12 Electric wave transmission systems Expired FR906932A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US344515A US2315435A (en) 1940-07-09 1940-07-09 Transmission system

Publications (1)

Publication Number Publication Date
FR906932A true FR906932A (en) 1946-02-25

Family

ID=23350855

Family Applications (1)

Application Number Title Priority Date Filing Date
FR906932D Expired FR906932A (en) 1940-07-09 1944-09-12 Electric wave transmission systems

Country Status (2)

Country Link
US (1) US2315435A (en)
FR (1) FR906932A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2191370A1 (en) * 1972-06-27 1974-02-01 Cit Alcatel

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE464402A (en) * 1945-02-06
FR957130A (en) * 1946-03-27 1950-02-16
NL142629B (en) * 1947-10-03 1900-01-01 Tovarna Motornih Vazil Tomos INTERCHANGE GEAR WITH CLUTCH AND GEARS IN A COMMON HOUSE.
US2580097A (en) * 1949-12-17 1951-12-25 Bell Telephone Labor Inc System for testing cable repeater
NL169808B (en) * 1951-05-23 Philips Nv FREQUENCY SELECTOR WITH FREEWHEEL CLUTCH.
US2746028A (en) * 1952-08-05 1956-05-15 Bell Telephone Labor Inc Air raid warning system
US2823270A (en) * 1953-10-15 1958-02-11 British Telecomm Res Ltd Testing arrangements for telecommunication systems
US3172965A (en) * 1959-04-10 1965-03-09 Communication transmission system em- ploying intermediate repeaters
US3054865A (en) * 1959-12-16 1962-09-18 British Telecomm Res Ltd Means for locating an inoperative signalling repeater
US3130277A (en) * 1960-12-29 1964-04-21 Bell Telephone Labor Inc Order wire and alarm circuits
US3070672A (en) * 1961-10-09 1962-12-25 Bell Telephone Labor Inc Order wire and alarm circuits
FR2060989A5 (en) * 1969-12-24 1971-06-18 Sits Soc It Telecom Siemens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2191370A1 (en) * 1972-06-27 1974-02-01 Cit Alcatel

Also Published As

Publication number Publication date
US2315435A (en) 1943-03-30

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