GB191209752A - Apparatus to Phonographically Recording Telephonically Transmitted Conversations. - Google Patents

Apparatus to Phonographically Recording Telephonically Transmitted Conversations.

Info

Publication number
GB191209752A
GB191209752A GB191209752DA GB191209752A GB 191209752 A GB191209752 A GB 191209752A GB 191209752D A GB191209752D A GB 191209752DA GB 191209752 A GB191209752 A GB 191209752A
Authority
GB
United Kingdom
Prior art keywords
arm
contacts
armature
circuit
spring
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
English (en)
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.)
WALSECK AND STARCKE
Original Assignee
WALSECK AND STARCKE
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 WALSECK AND STARCKE filed Critical WALSECK AND STARCKE
Application granted granted Critical
Publication of GB191209752A publication Critical patent/GB191209752A/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
    • H04M1/65—Recording arrangements for recording a message from the calling party

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Electromechanical Clocks (AREA)
  • Telephone Set Structure (AREA)
GB191209752D 1911-10-30 1912-04-24 Apparatus to Phonographically Recording Telephonically Transmitted Conversations. Expired GB191209752A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE256625T 1911-10-30
DE252385T 1911-11-25

Publications (1)

Publication Number Publication Date
GB191209752A true GB191209752A (en) 1912-11-07

Family

ID=32826435

Family Applications (2)

Application Number Title Priority Date Filing Date
GB191209751D Expired GB191209751A (en) 1911-10-30 1912-04-24 Apparatus for Phonographically Recording Telephonically Transmitted Conversations.
GB191209752D Expired GB191209752A (en) 1911-10-30 1912-04-24 Apparatus to Phonographically Recording Telephonically Transmitted Conversations.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB191209751D Expired GB191209751A (en) 1911-10-30 1912-04-24 Apparatus for Phonographically Recording Telephonically Transmitted Conversations.

Country Status (3)

Country Link
DE (2) DE256625C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR437442A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (2) GB191209751A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Also Published As

Publication number Publication date
FR437442A (fr) 1912-04-20
GB191209751A (en) 1912-11-07
DE252385C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE256625C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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