FR963490A - - Google Patents

Info

Publication number
FR963490A
FR963490A FR963490DA FR963490A FR 963490 A FR963490 A FR 963490A FR 963490D A FR963490D A FR 963490DA FR 963490 A FR963490 A FR 963490A
Authority
FR
France
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
French (fr)
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.)
Filing date
Publication date
Priority to US735939A priority Critical patent/US2457149A/en
Application filed filed Critical
Application granted granted Critical
Publication of FR963490A publication Critical patent/FR963490A/fr
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18Service support devices; Network management devices
    • H04W88/185Selective call encoders for paging networks, e.g. paging centre devices
    • H04W88/188Selective call encoders for paging networks, e.g. paging centre devices using frequency address codes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/26Devices for calling a subscriber
    • H04M1/30Devices which can set up and transmit only one digit at a time
    • H04M1/50Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q3/00Selecting arrangements
FR963490D 1947-03-20 1948-03-19 Expired FR963490A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US735939A US2457149A (en) 1947-03-20 1947-03-20 Selective signaling circuit

Publications (1)

Publication Number Publication Date
FR963490A true FR963490A (en) 1950-07-11

Family

ID=63556069

Family Applications (1)

Application Number Title Priority Date Filing Date
FR963490D Expired FR963490A (en) 1947-03-20 1948-03-19

Country Status (4)

Country Link
US (1) US2457149A (en)
BE (1) BE482052A (en)
FR (1) FR963490A (en)
GB (1) GB663859A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1025023B (en) * 1955-01-15 1958-02-27 Deutsche Bundespost Selective call system for dialing telephone subscribers in voice radio networks

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2591937A (en) * 1947-05-01 1952-04-08 Automatic Elect Lab Selective calling system
US2547025A (en) * 1947-05-23 1951-04-03 Motorola Inc Frequency selective calling system
US2547023A (en) * 1947-05-23 1951-04-03 Motorola Inc Selective calling system
US2547024A (en) * 1947-05-23 1951-04-03 Motorola Inc Selective calling system
US2602853A (en) * 1947-08-07 1952-07-08 Bell Telephone Labor Inc Selective signaling system
US2658188A (en) * 1948-06-29 1953-11-03 Bell Telephone Labor Inc Pulse position dialing system with direct time measuring apparatus
US2630482A (en) * 1948-07-10 1953-03-03 Bell Telephone Labor Inc Tuned vibrating reed selective circuit
GB673173A (en) * 1949-04-02
US2666196A (en) * 1949-06-07 1954-01-12 Bell Telephone Labor Inc Frequency station calling system using bifurcated piezoelectric elements
US2693526A (en) * 1949-06-15 1954-11-02 Automatic Elect Lab Single channel single frequency mobile radio telephone system
US2732433A (en) * 1950-09-22 1956-01-24 Automatic telephone exchanges
US2991562A (en) * 1953-04-10 1961-07-11 Donald G C Hare Training aid system for wave detection equipment
NL96282C (en) * 1954-12-30
US2975410A (en) * 1955-06-06 1961-03-14 Itt Data translating system
US2961649A (en) * 1956-03-09 1960-11-22 Kenneth R Eldredge Automatic reading system
US2934745A (en) * 1956-08-06 1960-04-26 Karl L Kocmanek Remote frequency selection system
US2980794A (en) * 1957-06-13 1961-04-18 Fairchild Camera Instr Co Automatic tone decoder
US3023373A (en) * 1958-05-15 1962-02-27 Thompson Ramo Wooldridge Inc Precision variable frequency generator
US3729581A (en) * 1970-09-03 1973-04-24 Display Sys Corp Computer assisted dial access video retrieval for an instructional television system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1025023B (en) * 1955-01-15 1958-02-27 Deutsche Bundespost Selective call system for dialing telephone subscribers in voice radio networks

Also Published As

Publication number Publication date
US2457149A (en) 1948-12-28
BE482052A (en) 1948-10-23
GB663859A (en) 1951-12-27

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