NL54789C - - Google Patents

Info

Publication number
NL54789C
NL54789C NL54789DA NL54789C NL 54789 C NL54789 C NL 54789C NL 54789D A NL54789D A NL 54789DA NL 54789 C NL54789 C NL 54789C
Authority
NL
Netherlands
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 NL54789C publication Critical patent/NL54789C/xx

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)
NL54789D 1940-06-28 NL54789C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE219318X 1940-06-28

Publications (1)

Publication Number Publication Date
NL54789C true NL54789C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=5831805

Family Applications (1)

Application Number Title Priority Date Filing Date
NL54789D NL54789C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1940-06-28

Country Status (2)

Country Link
CH (1) CH219318A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL54789C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Also Published As

Publication number Publication date
CH219318A (de) 1942-01-31

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