GB168305A - Improvements in telephonographs and the like - Google Patents

Improvements in telephonographs and the like

Info

Publication number
GB168305A
GB168305A GB1947921A GB1947921A GB168305A GB 168305 A GB168305 A GB 168305A GB 1947921 A GB1947921 A GB 1947921A GB 1947921 A GB1947921 A GB 1947921A GB 168305 A GB168305 A GB 168305A
Authority
GB
United Kingdom
Prior art keywords
telephonographs
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
GB1947921A
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.)
TELEGRAPHON GmbH
Original Assignee
TELEGRAPHON 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 TELEGRAPHON GmbH filed Critical TELEGRAPHON GmbH
Publication of GB168305A publication Critical patent/GB168305A/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)
  • Drawing Aids And Blackboards (AREA)
GB1947921A 1920-08-25 1921-07-19 Improvements in telephonographs and the like Expired GB168305A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE342901T 1920-08-25

Publications (1)

Publication Number Publication Date
GB168305A true GB168305A (en) 1922-03-02

Family

ID=33459956

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1947921A Expired GB168305A (en) 1920-08-25 1921-07-19 Improvements in telephonographs and the like

Country Status (3)

Country Link
DE (1) DE342901C (en)
FR (1) FR539603A (en)
GB (1) GB168305A (en)

Also Published As

Publication number Publication date
FR539603A (en) 1922-06-28
DE342901C (en) 1921-10-25

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