NL34614C - - Google Patents

Info

Publication number
NL34614C
NL34614C NL34614DA NL34614C NL 34614 C NL34614 C NL 34614C NL 34614D A NL34614D A NL 34614DA NL 34614 C NL34614 C NL 34614C
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 NL34614C publication Critical patent/NL34614C/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
    • H04M17/023Circuit arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
NL34614D 1930-03-21 NL34614C (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE355181X 1930-03-21

Publications (1)

Publication Number Publication Date
NL34614C true NL34614C (en:Method)

Family

ID=20308758

Family Applications (1)

Application Number Title Priority Date Filing Date
NL34614D NL34614C (en:Method) 1930-03-21

Country Status (6)

Country Link
US (1) US1855087A (en:Method)
BE (1) BE378410A (en:Method)
DE (1) DE583068C (en:Method)
FR (1) FR713494A (en:Method)
GB (1) GB355181A (en:Method)
NL (1) NL34614C (en:Method)

Also Published As

Publication number Publication date
BE378410A (en:Method)
DE583068C (de) 1933-08-28
US1855087A (en) 1932-04-19
GB355181A (en) 1931-08-20
FR713494A (fr) 1931-10-28

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