DE190461C - - Google Patents

Info

Publication number
DE190461C
DE190461C DENDAT190461D DE190461DA DE190461C DE 190461 C DE190461 C DE 190461C DE NDAT190461 D DENDAT190461 D DE NDAT190461D DE 190461D A DE190461D A DE 190461DA DE 190461 C DE190461 C DE 190461C
Authority
DE
Germany
Prior art keywords
answer
microphone circuit
microphone
phonograph
sound box
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
DENDAT190461D
Other languages
German (de)
English (en)
Publication of DE190461C publication Critical patent/DE190461C/de
Active legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/64Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
    • H04M1/65Recording arrangements for recording a message from the calling party

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Toys (AREA)
  • Auxiliary Devices For Music (AREA)
  • Telephone Set Structure (AREA)
DENDAT190461D Active DE190461C (https=)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE190463T

Publications (1)

Publication Number Publication Date
DE190461C true DE190461C (https=)

Family

ID=5723827

Family Applications (3)

Application Number Title Priority Date Filing Date
DENDAT190465D Active DE190465C (https=)
DENDAT190463D Active DE190463C (https=)
DENDAT190461D Active DE190461C (https=)

Family Applications Before (2)

Application Number Title Priority Date Filing Date
DENDAT190465D Active DE190465C (https=)
DENDAT190463D Active DE190463C (https=)

Country Status (1)

Country Link
DE (3) DE190461C (https=)

Also Published As

Publication number Publication date
DE190465C (https=)
DE190463C (https=)

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