NL103508C - - Google Patents

Info

Publication number
NL103508C
NL103508C NL103508DA NL103508C NL 103508 C NL103508 C NL 103508C NL 103508D A NL103508D A NL 103508DA NL 103508 C NL103508 C NL 103508C
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 NL103508C publication Critical patent/NL103508C/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/08Indicating faults in circuits or apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
NL103508D 1954-08-13 NL103508C (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE791457X 1954-08-13

Publications (1)

Publication Number Publication Date
NL103508C true NL103508C (xx)

Family

ID=20339681

Family Applications (2)

Application Number Title Priority Date Filing Date
NL103508D NL103508C (xx) 1954-08-13
NL199690D NL199690A (xx) 1954-08-13

Family Applications After (1)

Application Number Title Priority Date Filing Date
NL199690D NL199690A (xx) 1954-08-13

Country Status (5)

Country Link
US (1) US2873323A (xx)
BE (1) BE540563A (xx)
FR (1) FR1135831A (xx)
GB (1) GB791457A (xx)
NL (2) NL199690A (xx)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2635148A (en) * 1943-05-05 1953-04-14 American Telephone And Telepho Crossbar telephone system with marker release and lockout of defective line
US2513049A (en) * 1946-09-17 1950-06-27 Stromberg Carlson Co Automatic combined coder and timed release telephone system
US2542800A (en) * 1948-10-29 1951-02-20 Bell Telephone Labor Inc Variable timed release for registers controlled by register group busy means
US2508052A (en) * 1948-10-29 1950-05-16 Bell Telephone Labor Inc Trouble recorder control circuit
US2657271A (en) * 1950-05-19 1953-10-27 Bell Telephone Labor Inc Line identification trouble indicator

Also Published As

Publication number Publication date
FR1135831A (fr) 1957-05-03
NL199690A (xx)
GB791457A (en) 1958-03-05
BE540563A (xx)
US2873323A (en) 1959-02-10

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