NL137222B - - Google Patents

Info

Publication number
NL137222B
NL137222B NL137222DA NL137222B NL 137222 B NL137222 B NL 137222B NL 137222D A NL137222D A NL 137222DA NL 137222 B NL137222 B NL 137222B
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 NL137222B publication Critical patent/NL137222B/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q3/00Selecting arrangements
    • H04Q3/0004Selecting arrangements using crossbar selectors in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Interface Circuits In Exchanges (AREA)
NL137222D 1939-09-15 NL137222B (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US295012A US2293191A (en) 1939-09-15 1939-09-15 Telephone system

Publications (1)

Publication Number Publication Date
NL137222B true NL137222B (en:Method)

Family

ID=23135853

Family Applications (2)

Application Number Title Priority Date Filing Date
NL137222D NL137222B (en:Method) 1939-09-15
NL70954D NL70954C (en:Method) 1939-09-15

Family Applications After (1)

Application Number Title Priority Date Filing Date
NL70954D NL70954C (en:Method) 1939-09-15

Country Status (4)

Country Link
US (1) US2293191A (en:Method)
FR (1) FR962198A (en:Method)
GB (1) GB653002A (en:Method)
NL (2) NL70954C (en:Method)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2465539A (en) * 1946-12-20 1949-03-29 Bell Telephone Labor Inc Call failure signaling arrangement

Also Published As

Publication number Publication date
FR962198A (en:Method) 1950-06-02
US2293191A (en) 1942-08-18
NL70954C (en:Method)
GB653002A (en) 1951-05-09

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