BE475750A - - Google Patents

Info

Publication number
BE475750A
BE475750A BE475750DA BE475750A BE 475750 A BE475750 A BE 475750A BE 475750D A BE475750D A BE 475750DA BE 475750 A BE475750 A BE 475750A
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 BE475750A publication Critical patent/BE475750A/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)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Amplifiers (AREA)
BE475750D 1939-10-04 BE475750A (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US297832A US2224569A (en) 1939-10-04 1939-10-04 Control of transmission in two-way signaling systems

Publications (1)

Publication Number Publication Date
BE475750A true BE475750A (enrdf_load_html_response)

Family

ID=23147926

Family Applications (1)

Application Number Title Priority Date Filing Date
BE475750D BE475750A (enrdf_load_html_response) 1939-10-04

Country Status (5)

Country Link
US (1) US2224569A (enrdf_load_html_response)
BE (1) BE475750A (enrdf_load_html_response)
FR (1) FR949301A (enrdf_load_html_response)
GB (1) GB628348A (enrdf_load_html_response)
NL (1) NL70924C (enrdf_load_html_response)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH303090A (de) * 1949-10-11 1954-11-15 Nederlanden Staat Gabelschaltung.
US2632052A (en) * 1950-11-02 1953-03-17 Bell Telephone Labor Inc Transmission control in two-way signaling system
BE630382A (enrdf_load_html_response) * 1962-03-30
US5471527A (en) * 1993-12-02 1995-11-28 Dsc Communications Corporation Voice enhancement system and method
CN118555373B (zh) * 2024-07-29 2024-10-18 广东柔乐电器有限公司 二线低功耗可视对讲门禁系统

Also Published As

Publication number Publication date
FR949301A (fr) 1949-08-26
NL70924C (enrdf_load_html_response)
GB628348A (en) 1949-08-26
US2224569A (en) 1940-12-10

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