BE464852A - - Google Patents

Info

Publication number
BE464852A
BE464852A BE464852DA BE464852A BE 464852 A BE464852 A BE 464852A BE 464852D A BE464852D A BE 464852DA BE 464852 A BE464852 A BE 464852A
Authority
BE
Belgium
Application number
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.)
Publication of BE464852A publication Critical patent/BE464852A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Amplifiers (AREA)
BE464852D 1939-08-14 BE464852A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US290088A US2282404A (en) 1939-08-14 1939-08-14 Transmission system

Publications (1)

Publication Number Publication Date
BE464852A true BE464852A (ja)

Family

ID=23114484

Family Applications (1)

Application Number Title Priority Date Filing Date
BE464852D BE464852A (ja) 1939-08-14

Country Status (4)

Country Link
US (1) US2282404A (ja)
BE (1) BE464852A (ja)
FR (1) FR930807A (ja)
GB (1) GB541981A (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2831922A (en) * 1953-05-06 1958-04-22 Gai Tronics Corp Telephone substation
US2850569A (en) * 1953-09-07 1958-09-02 Defensor A G Electric arrangement for speech transmission in two directions
US3060265A (en) * 1960-01-26 1962-10-23 Itt Conference call circuit

Also Published As

Publication number Publication date
US2282404A (en) 1942-05-12
GB541981A (en) 1941-12-19
FR930807A (fr) 1948-02-05

Similar Documents

Publication Publication Date Title
FR846465A (ja)
BE431181A (ja)
BE413600A (ja)
BE456046A (ja)
BE441868A (ja)
BE464850A (ja)
BE464851A (ja)
BE475750A (ja)
BE440196A (ja)
BE437995A (ja)
BE436027A (ja)
BE436022A (ja)
BE436007A (ja)
BE435988A (ja)
BE435911A (ja)
BE435823A (ja)
BE435757A (ja)
BE435664A (ja)
BE435654A (ja)
NL60726C (ja)
BE435474A (ja)
BE435413A (ja)
BE435335A (ja)
BE435213A (ja)
BE434846A (ja)