DE112239C - - Google Patents

Info

Publication number
DE112239C
DE112239C DENDAT112239D DE112239DA DE112239C DE 112239 C DE112239 C DE 112239C DE NDAT112239 D DENDAT112239 D DE NDAT112239D DE 112239D A DE112239D A DE 112239DA DE 112239 C DE112239 C DE 112239C
Authority
DE
Germany
Prior art keywords
microphone
buzzer
line
receiver
hook
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
DENDAT112239D
Other languages
German (de)
English (en)
Publication of DE112239C publication Critical patent/DE112239C/de
Active legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/001—Two-way communication systems between a limited number of parties

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
DENDAT112239D Active DE112239C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Publications (1)

Publication Number Publication Date
DE112239C true DE112239C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=381912

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT112239D Active DE112239C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Country Status (1)

Country Link
DE (1) DE112239C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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