BE395872A - - Google Patents

Info

Publication number
BE395872A
BE395872A BE395872DA BE395872A BE 395872 A BE395872 A BE 395872A BE 395872D A BE395872D A BE 395872DA BE 395872 A BE395872 A BE 395872A
Authority
BE
Belgium
Application number
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.)
Publication of BE395872A publication Critical patent/BE395872A/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M17/00Prepayment of wireline communication systems, wireless communication systems or telephone systems
    • H04M17/02Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/66Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
    • H04M1/677Preventing the dialling or sending of predetermined telephone numbers or selected types of telephone numbers, e.g. long distance numbers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
BE395872D 1932-05-17 BE395872A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE401586X 1932-05-17

Publications (1)

Publication Number Publication Date
BE395872A true BE395872A (fr)

Family

ID=6406612

Family Applications (1)

Application Number Title Priority Date Filing Date
BE395872D BE395872A (fr) 1932-05-17

Country Status (4)

Country Link
BE (1) BE395872A (fr)
FR (1) FR754355A (fr)
GB (1) GB401586A (fr)
NL (1) NL34344C (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3511939A (en) * 1967-03-20 1970-05-12 Tamura Electric Works Ltd Local-call pay telephone arranged for key-enabled toll calls

Also Published As

Publication number Publication date
NL34344C (fr)
GB401586A (en) 1933-11-16
FR754355A (fr) 1933-11-03

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