FR750627A - Locking device controlling the use of telephone devices - Google Patents

Locking device controlling the use of telephone devices

Info

Publication number
FR750627A
FR750627A FR750627DA FR750627A FR 750627 A FR750627 A FR 750627A FR 750627D A FR750627D A FR 750627DA FR 750627 A FR750627 A FR 750627A
Authority
FR
France
Prior art keywords
locking device
device controlling
telephone devices
telephone
devices
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
Andre Mareche
Andre Salomon
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 filed Critical
Application granted granted Critical
Publication of FR750627A publication Critical patent/FR750627A/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
    • H04M17/026—Constructional features

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
FR750627D 1933-02-13 1933-02-13 Locking device controlling the use of telephone devices Expired FR750627A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR750627T 1933-02-13

Publications (1)

Publication Number Publication Date
FR750627A true FR750627A (en) 1933-08-14

Family

ID=9151886

Family Applications (1)

Application Number Title Priority Date Filing Date
FR750627D Expired FR750627A (en) 1933-02-13 1933-02-13 Locking device controlling the use of telephone devices

Country Status (1)

Country Link
FR (1) FR750627A (en)

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