FR71959E - Automatic switching system usable in automatic telephony - Google Patents

Automatic switching system usable in automatic telephony

Info

Publication number
FR71959E
FR71959E FR71959DA FR71959E FR 71959 E FR71959 E FR 71959E FR 71959D A FR71959D A FR 71959DA FR 71959 E FR71959 E FR 71959E
Authority
FR
France
Prior art keywords
automatic
switching system
telephony
system usable
automatic switching
Prior art date
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)
Inventor
Frederick Harry Bray
Ronald George Knight
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 claimed from GB803551A external-priority patent/GB695497A/en
Priority claimed from GB377552A external-priority patent/GB756322A/en
Priority claimed from GB2273953A external-priority patent/GB780831A/en
Priority claimed from GB100554A external-priority patent/GB753357A/en
Priority claimed from GB12067/55A external-priority patent/GB756419A/en
Priority claimed from GB953755A external-priority patent/GB769617A/en
Priority claimed from GB2833255A external-priority patent/GB776516A/en
Priority claimed from GB4028/56A external-priority patent/GB809605A/en
Priority claimed from US578823A external-priority patent/US2828365A/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR71959E publication Critical patent/FR71959E/en
Application granted granted Critical
Priority claimed from GB37/75A external-priority patent/GB1488174A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/525—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements using tubes in the switching stages
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/38—Cold-cathode tubes
    • H01J17/48—Cold-cathode tubes with more than one cathode or anode, e.g. sequence-discharge tube, counting tube, dekatron
    • 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
    • H03K17/68—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 specially adapted for switching ac currents or voltages
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/007—Sequential discharge tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
FR71959D 1951-04-06 1957-02-08 Automatic switching system usable in automatic telephony Expired FR71959E (en)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
GB803551A GB695497A (en) 1951-04-06 1951-04-06 Improvements in or relating to automatic telecommunication exchange system
GB377552A GB756322A (en) 1952-02-13 1952-02-13 Improvements in or relating to electric switching circuits
GB2273953A GB780831A (en) 1953-08-18 1953-08-18 Improvements in or relating to electrical switches employing bi-directional transistors
GB100554A GB753357A (en) 1954-01-13 1954-01-13 Improvements in or relating to electric code translators
GB12067/55A GB756419A (en) 1952-02-13 1955-02-13 Improvements in or relating to electrical switching circuits
GB953755A GB769617A (en) 1955-04-01 1955-04-01 Improvements in or relating to electronic registering equipment
GB2833255A GB776516A (en) 1951-04-06 1955-10-05 Static electrical code translating apparatus
GB4028/56A GB809605A (en) 1956-02-09 1956-02-09 Improvements in or relating to automatic telecommunication exchange equipment
US578823A US2828365A (en) 1956-04-17 1956-04-17 Relayless line circuit
GB37/75A GB1488174A (en) 1974-01-10 1975-01-02 Electrical penetration assemblies

Publications (1)

Publication Number Publication Date
FR71959E true FR71959E (en) 1960-03-15

Family

ID=31982841

Family Applications (1)

Application Number Title Priority Date Filing Date
FR71959D Expired FR71959E (en) 1951-04-06 1957-02-08 Automatic switching system usable in automatic telephony

Country Status (1)

Country Link
FR (1) FR71959E (en)

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