BE441725A - - Google Patents

Info

Publication number
BE441725A
BE441725A BE441725DA BE441725A BE 441725 A BE441725 A BE 441725A BE 441725D A BE441725D A BE 441725DA BE 441725 A BE441725 A BE 441725A
Authority
BE
Belgium
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 BE441725A publication Critical patent/BE441725A/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • H03K17/62—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/08—Metering calls to called party, i.e. B-party charged for the communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
    • H04M3/64—Arrangements for signalling the number or class of the calling line to the operator
BE441725D 1939-09-21 BE441725A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US295889A US2244700A (en) 1939-09-21 1939-09-21 Telephone system

Publications (1)

Publication Number Publication Date
BE441725A true BE441725A (fr)

Family

ID=23139643

Family Applications (1)

Application Number Title Priority Date Filing Date
BE441725D BE441725A (fr) 1939-09-21

Country Status (4)

Country Link
US (1) US2244700A (fr)
BE (1) BE441725A (fr)
FR (1) FR902622A (fr)
NL (1) NL67277C (fr)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL59752C (fr) * 1941-08-21
NL157970B (nl) * 1945-04-19 Hurth Masch Zahnrad Carl Schakelinrichting voor een wrijvingskoppeling.
US2600502A (en) * 1948-04-24 1952-06-17 Bell Telephone Labor Inc Calling line and private branch exchange line identifier
NL82021C (fr) * 1950-01-28
NL87833C (fr) * 1950-06-15
NL85263C (fr) * 1950-10-13
US2696600A (en) * 1950-11-30 1954-12-07 Rca Corp Combinatorial information-storage network
US2657272A (en) * 1951-03-03 1953-10-27 Bell Telephone Labor Inc Electronic induction translator
US2934603A (en) * 1951-07-12 1960-04-26 Nederlanden Staat Electronic relay and the control of arrangements therewith
US2740842A (en) * 1952-02-12 1956-04-03 Commercial Radio Sound Corp Audible and visual two-way communication and annunciation system for hospitals and the like
US2844811A (en) * 1952-08-20 1958-07-22 Monroe Calculating Machine Switching circuits
US2896021A (en) * 1954-02-09 1959-07-21 Standard Electric Time Co Inter-communication system
US2926334A (en) * 1955-04-20 1960-02-23 Bell Telephone Labor Inc Error detection circuit
US2992410A (en) * 1956-02-28 1961-07-11 Bell Telephone Labor Inc Selector for switching network
US2978641A (en) * 1956-10-31 1961-04-04 Siemens And Halske Ag Berlin A Circuit ambiguity testing apparatus
US3016425A (en) * 1956-12-18 1962-01-09 Bell Telephone Labor Inc Ferroelectric translator
US2972015A (en) * 1957-05-08 1961-02-14 Fairchild Camera Instr Co Coding apparatus
US3017459A (en) * 1958-07-14 1962-01-16 Fairchild Camera Instr Co Coding apparatus
US3088103A (en) * 1958-12-18 1963-04-30 Royal Mcbee Corp Matrix encoders
FR1283363A (fr) * 1960-12-22 1962-02-02 Dispositif permettant de transmettre à distance un grand nombre d'informations par appel codé d'une grandeur dont la donnée a été préalablement affichée sur un panneau
US3160101A (en) * 1962-02-15 1964-12-08 North Electric Co Automatic selective control of pumping engines
GB1437483A (en) * 1973-04-19 1976-05-26 Gte International Inc Operator display arrangements of a telephone exchange switching system

Also Published As

Publication number Publication date
FR902622A (fr) 1945-09-05
US2244700A (en) 1941-06-10
NL67277C (fr)

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