FR450630A - Automatic telephone controller - Google Patents

Automatic telephone controller

Info

Publication number
FR450630A
FR450630A FR450630DA FR450630A FR 450630 A FR450630 A FR 450630A FR 450630D A FR450630D A FR 450630DA FR 450630 A FR450630 A FR 450630A
Authority
FR
France
Prior art keywords
automatic telephone
telephone controller
controller
automatic
telephone
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
Ernest Dejardin
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.)
ERNEST DEJARDIN
Original Assignee
ERNEST DEJARDIN
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 ERNEST DEJARDIN filed Critical ERNEST DEJARDIN
Application granted granted Critical
Publication of FR450630A publication Critical patent/FR450630A/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)
FR450630D 1912-11-15 1912-11-15 Automatic telephone controller Expired FR450630A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR450630T 1912-11-15

Publications (1)

Publication Number Publication Date
FR450630A true FR450630A (en) 1913-03-29

Family

ID=1491037

Family Applications (1)

Application Number Title Priority Date Filing Date
FR450630D Expired FR450630A (en) 1912-11-15 1912-11-15 Automatic telephone controller

Country Status (1)

Country Link
FR (1) FR450630A (en)

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