NL69785C - - Google Patents

Info

Publication number
NL69785C
NL69785C NL69785DA NL69785C NL 69785 C NL69785 C NL 69785C NL 69785D A NL69785D A NL 69785DA NL 69785 C NL69785 C NL 69785C
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 NL69785C publication Critical patent/NL69785C/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/14—Arrangements providing for calling or supervisory signals
    • 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
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
    • H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Telephonic Communication Services (AREA)
NL69785D 1947-02-21 NL69785C (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL130519 1947-02-21

Publications (1)

Publication Number Publication Date
NL69785C true NL69785C (zh)

Family

ID=19750410

Family Applications (1)

Application Number Title Priority Date Filing Date
NL69785D NL69785C (zh) 1947-02-21

Country Status (6)

Country Link
US (1) US2496784A (zh)
CH (1) CH265981A (zh)
DE (1) DE841924C (zh)
FR (2) FR963277A (zh)
GB (1) GB656189A (zh)
NL (1) NL69785C (zh)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL80217C (zh) * 1950-06-15
DE931711C (de) * 1950-08-27 1955-08-16 Lorenz C Ag Empfaenger fuer Wechselstromimpulse
DE973493C (de) * 1950-09-28 1960-03-10 Philips Nv Einseitenbandtraegerfrequenzfernsprechsystem
NL92529C (zh) * 1952-04-09
DE939820C (de) * 1952-05-06 1956-03-01 Siemens Ag Schaltungsanordnung zum Empfang von Spannungen einer oder mehrerer Signalfrequenzen
FI104995B (fi) 1999-01-28 2000-05-15 Halton Oy Kaasumaista väliainetta kuten ilmavirtausta säätävän venttiilin säädinrakenne

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE347704A (zh) * 1927-01-04
US2018464A (en) * 1930-06-07 1935-10-22 Bell Telephone Labor Inc Voice operated transmission circuit
FR812623A (fr) * 1936-01-16 1937-05-13 Applic Telephoniques Soc D Dispositif pour la réception et la retransmission des signaux dans les lignes téléphoniques à longue distance
US2145053A (en) * 1936-11-18 1939-01-24 Bell Telephone Labor Inc Signaling system
US2199179A (en) * 1936-11-27 1940-04-30 Rca Corp Single channel two-way communication system
US2251958A (en) * 1937-01-29 1941-08-12 Hartford Nat Bank & Trust Co Telephony
US2164185A (en) * 1937-05-22 1939-06-27 Great Lakes Pipe Line Company Voice operated repeater
GB495162A (en) * 1938-02-22 1938-11-08 Arthur Reginald Albert Rendall Improvements in and relating to alternating current signalling systems
BE434364A (zh) * 1938-05-16
US2371291A (en) * 1939-08-14 1945-03-13 Transmission system
US2366011A (en) * 1941-07-23 1944-12-26 Kellogg Switchboard & Supply Two-way amplifier
US2319306A (en) * 1941-10-31 1943-05-18 Bell Telephone Labor Inc Signaling system

Also Published As

Publication number Publication date
GB656189A (en) 1951-08-15
CH265981A (de) 1949-12-31
US2496784A (en) 1950-02-07
FR963277A (zh) 1950-07-05
DE841924C (de) 1952-06-19
FR961481A (zh) 1950-05-12

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