FR735136A - Circuit arrangement for controlling coin-collecting telephones - Google Patents

Circuit arrangement for controlling coin-collecting telephones

Info

Publication number
FR735136A
FR735136A FR735136DA FR735136A FR 735136 A FR735136 A FR 735136A FR 735136D A FR735136D A FR 735136DA FR 735136 A FR735136 A FR 735136A
Authority
FR
France
Prior art keywords
telephones
collecting
circuit arrangement
controlling coin
coin
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)
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of FR735136A publication Critical patent/FR735136A/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)
  • Prepayment Telephone Systems (AREA)
FR735136D 1931-04-14 1932-04-12 Circuit arrangement for controlling coin-collecting telephones Expired FR735136A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE399565X 1931-04-14

Publications (1)

Publication Number Publication Date
FR735136A true FR735136A (en) 1932-11-03

Family

ID=20309411

Family Applications (1)

Application Number Title Priority Date Filing Date
FR735136D Expired FR735136A (en) 1931-04-14 1932-04-12 Circuit arrangement for controlling coin-collecting telephones

Country Status (3)

Country Link
BE (1) BE387820A (en)
FR (1) FR735136A (en)
GB (1) GB399565A (en)

Also Published As

Publication number Publication date
BE387820A (en)
GB399565A (en) 1933-10-12

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