GB392079A - Improvements in or relating to automatic telephone stations - Google Patents

Improvements in or relating to automatic telephone stations

Info

Publication number
GB392079A
GB392079A GB30318/32A GB3031832A GB392079A GB 392079 A GB392079 A GB 392079A GB 30318/32 A GB30318/32 A GB 30318/32A GB 3031832 A GB3031832 A GB 3031832A GB 392079 A GB392079 A GB 392079A
Authority
GB
United Kingdom
Prior art keywords
contact
dial
dialled
coin
barred
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
GB30318/32A
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.)
Telephon Apparat Fabrik E Zwietusch and Co
Original Assignee
Telephon Apparat Fabrik E Zwietusch and Co
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 Telephon Apparat Fabrik E Zwietusch and Co filed Critical Telephon Apparat Fabrik E Zwietusch and Co
Publication of GB392079A publication Critical patent/GB392079A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
    • H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
    • H04M17/023—Circuit arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
GB30318/32A 1931-12-05 1932-10-28 Improvements in or relating to automatic telephone stations Expired GB392079A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE392079X 1931-12-05

Publications (1)

Publication Number Publication Date
GB392079A true GB392079A (en) 1933-05-11

Family

ID=6383530

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30318/32A Expired GB392079A (en) 1931-12-05 1932-10-28 Improvements in or relating to automatic telephone stations

Country Status (2)

Country Link
GB (1) GB392079A (enrdf_load_stackoverflow)
NL (1) NL35409C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
NL35409C (enrdf_load_stackoverflow)

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