NL71148C - - Google Patents

Info

Publication number
NL71148C
NL71148C NL71148DA NL71148C NL 71148 C NL71148 C NL 71148C NL 71148D A NL71148D A NL 71148DA NL 71148 C NL71148 C NL 71148C
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 NL71148C publication Critical patent/NL71148C/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/50—Conversion between different kinds of signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
NL71148D 1942-04-20 NL71148C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB247351X 1942-04-20

Publications (1)

Publication Number Publication Date
NL71148C true NL71148C (en)

Family

ID=10216422

Family Applications (1)

Application Number Title Priority Date Filing Date
NL71148D NL71148C (en) 1942-04-20

Country Status (5)

Country Link
US (1) US2422285A (en)
CH (2) CH251036A (en)
FR (1) FR933089A (en)
GB (1) GB556920A (en)
NL (1) NL71148C (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1463972A (en) * 1923-08-07 Automatic telephone system
US1503923A (en) * 1918-05-06 1924-08-05 Stromberg Carlson Telephone Telephone switching system
US2090205A (en) * 1934-06-21 1937-08-17 Siemens Brothers & Co Ltd Electric remote control system
US2058216A (en) * 1935-05-11 1936-10-20 Bell Telephone Labor Inc Signaling system
GB469664A (en) * 1936-01-29 1937-07-29 Automatic Electric Co Ltd Improvements in automatic switches for use in telephone or like systems

Also Published As

Publication number Publication date
CH251036A (en) 1947-09-30
CH247351A (en) 1947-02-28
US2422285A (en) 1947-06-17
GB556920A (en) 1943-10-27
FR933089A (en) 1948-04-09

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