CH285300A - Loudspeaker bilateral telephone system. - Google Patents

Loudspeaker bilateral telephone system.

Info

Publication number
CH285300A
CH285300A CH285300DA CH285300A CH 285300 A CH285300 A CH 285300A CH 285300D A CH285300D A CH 285300DA CH 285300 A CH285300 A CH 285300A
Authority
CH
Switzerland
Prior art keywords
loudspeaker
telephone system
bilateral telephone
bilateral
telephone
Prior art date
Application number
Other languages
French (fr)
Inventor
L Le Teleampliphone S A R
Original Assignee
L Le Teleampliphone S A R
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 L Le Teleampliphone S A R filed Critical L Le Teleampliphone S A R
Publication of CH285300A publication Critical patent/CH285300A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
CH285300D 1948-06-11 1949-04-04 Loudspeaker bilateral telephone system. CH285300A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US285300XA 1948-06-11 1948-06-11

Publications (1)

Publication Number Publication Date
CH285300A true CH285300A (en) 1952-08-31

Family

ID=21843958

Family Applications (1)

Application Number Title Priority Date Filing Date
CH285300D CH285300A (en) 1948-06-11 1949-04-04 Loudspeaker bilateral telephone system.

Country Status (2)

Country Link
CH (1) CH285300A (en)
DE (1) DE839369C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1080787B (en) * 1954-08-02 1960-04-28 Gen Electric Device for developing or making visible and for permanent transmission of magnetic recordings

Also Published As

Publication number Publication date
DE839369C (en) 1952-05-19

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