FR849220A - Grid operated discharge tube - Google Patents

Grid operated discharge tube

Info

Publication number
FR849220A
FR849220A FR849220DA FR849220A FR 849220 A FR849220 A FR 849220A FR 849220D A FR849220D A FR 849220DA FR 849220 A FR849220 A FR 849220A
Authority
FR
France
Prior art keywords
discharge tube
operated discharge
grid operated
grid
tube
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)
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.)
Fides BV
Original Assignee
Fides BV
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
Application filed by Fides BV filed Critical Fides BV
Application granted granted Critical
Publication of FR849220A publication Critical patent/FR849220A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/50—Thermionic-cathode tubes
    • H01J17/52—Thermionic-cathode tubes with one cathode and one anode
    • H01J17/54—Thermionic-cathode tubes with one cathode and one anode having one or more control electrodes
    • H01J17/56—Thermionic-cathode tubes with one cathode and one anode having one or more control electrodes for preventing and then permitting ignition, but thereafter having no control
FR849220D 1938-01-28 1939-01-23 Grid operated discharge tube Expired FR849220A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1938S0130594 DE689726C (en) 1938-01-28 1938-01-28 Gas or steam-filled electrical discharge tube for control purposes

Publications (1)

Publication Number Publication Date
FR849220A true FR849220A (en) 1939-11-16

Family

ID=5794027

Family Applications (1)

Application Number Title Priority Date Filing Date
FR849220D Expired FR849220A (en) 1938-01-28 1939-01-23 Grid operated discharge tube

Country Status (6)

Country Link
US (1) US2218331A (en)
CH (1) CH208070A (en)
DE (1) DE689726C (en)
FR (1) FR849220A (en)
GB (1) GB524446A (en)
NL (1) NL53563C (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE861446C (en) * 1940-06-15 1953-01-05 Philips Nv Gas-filled electric discharge tubes
US2427089A (en) * 1942-10-28 1947-09-09 Westinghouse Electric Corp Switch
US2423066A (en) * 1943-07-16 1947-06-24 Standard Telephones Cables Ltd Metal-glass and the like seals
US2466059A (en) * 1943-09-03 1949-04-05 Raytheon Mfg Co Laminated magnetron
US2449967A (en) * 1944-05-10 1948-09-21 Jones Frank Llewellyn Spark gap
US2457950A (en) * 1945-01-18 1949-01-04 Albert G Thomas Electronic device
US2681995A (en) * 1949-11-26 1954-06-22 Zenith Radio Corp Electron discharge device and circuits
NL285748A (en) * 1961-12-01 1900-01-01

Also Published As

Publication number Publication date
US2218331A (en) 1940-10-15
NL53563C (en) 1942-12-15
GB524446A (en) 1940-08-07
CH208070A (en) 1939-12-31
DE689726C (en) 1940-04-01

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