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GB597538A - Improvements in or relating to gas-filled electric discharge tubes - Google Patents

Improvements in or relating to gas-filled electric discharge tubes

Info

Publication number
GB597538A
GB597538A GB2146145A GB2146145A GB597538A GB 597538 A GB597538 A GB 597538A GB 2146145 A GB2146145 A GB 2146145A GB 2146145 A GB2146145 A GB 2146145A GB 597538 A GB597538 A GB 597538A
Authority
GB
United Kingdom
Prior art keywords
gas
relating
electric discharge
discharge tubes
filled electric
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
GB2146145A
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.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
Philips Gloeilampenfabrieken NV
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 Philips Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd
Publication of GB597538A publication Critical patent/GB597538A/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

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Lubricants (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

597,538. Thermionic valves. PHILIPS LAMPS, Ltd. Aug. 22, 1945, No. 21461. Convention date, June 15, 1940. [Class 39 (i)] Mica or metal screens 7 divide the envelope of a gas-filled discharge valve into separate compartments, in each of which is a three-electrode system 2, 3, 4. The upper and lower mica spacers 5, 6 also extend to the envelope walls. The subject-matter is identical with that of Specification 547,646.
GB2146145A 1941-09-19 1945-08-22 Improvements in or relating to gas-filled electric discharge tubes Expired GB597538A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1216041A GB547646A (en) 1941-09-19 1941-09-19 Improvements in or relating to gas filled electric discharge tubes

Publications (1)

Publication Number Publication Date
GB597538A true GB597538A (en) 1948-01-28

Family

ID=9999439

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1216041A Expired GB547646A (en) 1941-09-19 1941-09-19 Improvements in or relating to gas filled electric discharge tubes
GB2146145A Expired GB597538A (en) 1941-09-19 1945-08-22 Improvements in or relating to gas-filled electric discharge tubes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB1216041A Expired GB547646A (en) 1941-09-19 1941-09-19 Improvements in or relating to gas filled electric discharge tubes

Country Status (2)

Country Link
FR (1) FR873550A (en)
GB (2) GB547646A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2721951A (en) * 1950-12-29 1955-10-25 Rca Corp Low reactance electron discharge device
US2892119A (en) * 1955-10-04 1959-06-23 Westinghouse Electric Corp Electron discharge device

Also Published As

Publication number Publication date
FR873550A (en) 1942-07-10
GB547646A (en) 1942-09-04

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