FR649051A - Electric discharge tube - Google Patents

Electric discharge tube

Info

Publication number
FR649051A
FR649051A FR649051DA FR649051A FR 649051 A FR649051 A FR 649051A FR 649051D A FR649051D A FR 649051DA FR 649051 A FR649051 A FR 649051A
Authority
FR
France
Prior art keywords
electric discharge
discharge tube
tube
electric
discharge
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.)
Koninklijke Philips NV
Original Assignee
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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR649051A publication Critical patent/FR649051A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
    • H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
    • H01J7/18—Means for absorbing or adsorbing gas, e.g. by gettering
    • H01J7/183—Composition or manufacture of getters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H01J19/30—Non-electron-emitting electrodes; Screens characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0019—Chemical composition and manufacture
    • H01J2893/002—Chemical composition and manufacture chemical
FR649051D 1927-10-14 1928-02-14 Electric discharge tube Expired FR649051A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL550178X 1927-10-14
GB32839/26A GB300403A (en) 1927-10-14 1927-12-05 Improvements relating to thermionic valves or electron discharge tubes

Publications (1)

Publication Number Publication Date
FR649051A true FR649051A (en) 1928-12-18

Family

ID=34436847

Family Applications (1)

Application Number Title Priority Date Filing Date
FR649051D Expired FR649051A (en) 1927-10-14 1928-02-14 Electric discharge tube

Country Status (3)

Country Link
DE (1) DE550178C (en)
FR (1) FR649051A (en)
GB (1) GB300403A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2067817A (en) * 1934-09-15 1937-01-12 Gen Electric Device for gettering metal tubes
DE761089C (en) * 1937-12-31 1954-04-29 Siemens & Halske A G Indirectly heated glow cathode for Braun tubes
IT508975A (en) * 1952-07-19
DE1011996B (en) * 1952-12-01 1957-07-11 Siemens Reiniger Werke Ag Vacuum vessel with a getter arrangement that can be heated to bind gases
DE1094376B (en) * 1957-05-31 1960-12-08 Gen Electric Process for creating a vacuum inside a sealable cover, e.g. a cover of an electric discharge tube

Also Published As

Publication number Publication date
GB300403A (en) 1928-11-15
DE550178C (en) 1932-05-12

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