BE530328A - - Google Patents

Info

Publication number
BE530328A
BE530328A BE530328DA BE530328A BE 530328 A BE530328 A BE 530328A BE 530328D A BE530328D A BE 530328DA BE 530328 A BE530328 A BE 530328A
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 BE530328A publication Critical patent/BE530328A/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/60Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
BE530328D 1953-07-22 BE530328A (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1114869XA 1953-07-22 1953-07-22

Publications (1)

Publication Number Publication Date
BE530328A true BE530328A (en:Method)

Family

ID=22338820

Family Applications (1)

Application Number Title Priority Date Filing Date
BE530328D BE530328A (en:Method) 1953-07-22

Country Status (2)

Country Link
BE (1) BE530328A (en:Method)
FR (1) FR1114869A (en:Method)

Also Published As

Publication number Publication date
FR1114869A (fr) 1956-04-17

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