FR476947A - Device for phonographic recording of telephone conversations - Google Patents

Device for phonographic recording of telephone conversations

Info

Publication number
FR476947A
FR476947A FR476947DA FR476947A FR 476947 A FR476947 A FR 476947A FR 476947D A FR476947D A FR 476947DA FR 476947 A FR476947 A FR 476947A
Authority
FR
France
Prior art keywords
telephone conversations
phonographic recording
phonographic
recording
conversations
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.)
Expired
Application number
Other languages
French (fr)
Inventor
Franz Seelau
Alexander M Newman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR476947A publication Critical patent/FR476947A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR476947D 1913-06-30 1914-06-10 Device for phonographic recording of telephone conversations Expired FR476947A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE476947X 1913-06-30

Publications (1)

Publication Number Publication Date
FR476947A true FR476947A (en) 1915-09-09

Family

ID=1514665

Family Applications (1)

Application Number Title Priority Date Filing Date
FR476947D Expired FR476947A (en) 1913-06-30 1914-06-10 Device for phonographic recording of telephone conversations

Country Status (1)

Country Link
FR (1) FR476947A (en)

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