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 (en:Method)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
NL69785C true NL69785C (en:Method)

Family

ID=19750410

Family Applications (1)

Application Number Title Priority Date Filing Date
NL69785D NL69785C (en:Method) 1947-02-21

Country Status (6)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL80217C (en:Method) * 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 (en:Method) * 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
NL39470B (en:Method) * 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 (en:Method) * 1938-05-16
BE464853A (en:Method) * 1939-08-14
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
CH265981A (de) 1949-12-31
GB656189A (en) 1951-08-15
US2496784A (en) 1950-02-07
FR963277A (en:Method) 1950-07-05
FR961481A (en:Method) 1950-05-12
DE841924C (de) 1952-06-19

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