CH252031A - Intercom. - Google Patents

Intercom.

Info

Publication number
CH252031A
CH252031A CH252031DA CH252031A CH 252031 A CH252031 A CH 252031A CH 252031D A CH252031D A CH 252031DA CH 252031 A CH252031 A CH 252031A
Authority
CH
Switzerland
Prior art keywords
intercom
Prior art date
Application number
Other languages
German (de)
Inventor
Telefunken Gesellschaft Fu Mbh
Original Assignee
Telefunken Gmbh
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 Telefunken Gmbh filed Critical Telefunken Gmbh
Publication of CH252031A publication Critical patent/CH252031A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation 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)
CH252031D 1943-05-07 1944-06-12 Intercom. CH252031A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE905007X 1943-05-07

Publications (1)

Publication Number Publication Date
CH252031A true CH252031A (en) 1947-11-30

Family

ID=6862088

Family Applications (1)

Application Number Title Priority Date Filing Date
CH252031D CH252031A (en) 1943-05-07 1944-06-12 Intercom.

Country Status (2)

Country Link
CH (1) CH252031A (en)
FR (1) FR905007A (en)

Also Published As

Publication number Publication date
FR905007A (en) 1945-11-22

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