FR577242A - Electric discharge tube - Google Patents

Electric discharge tube

Info

Publication number
FR577242A
FR577242A FR577242DA FR577242A FR 577242 A FR577242 A FR 577242A FR 577242D A FR577242D A FR 577242DA FR 577242 A FR577242 A FR 577242A
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 FR577242A publication Critical patent/FR577242A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
FR577242D 1923-11-20 1923-11-20 Electric discharge tube Expired FR577242A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR577242T 1923-11-20

Publications (1)

Publication Number Publication Date
FR577242A true FR577242A (en) 1924-09-02

Family

ID=8954593

Family Applications (1)

Application Number Title Priority Date Filing Date
FR577242D Expired FR577242A (en) 1923-11-20 1923-11-20 Electric discharge tube

Country Status (3)

Country Link
US (1) US2030521A (en)
FR (1) FR577242A (en)
GB (1) GB225218A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4866339A (en) * 1987-12-21 1989-09-12 Gte Laboratories Incorporated Beam mode fluorescent lamp

Also Published As

Publication number Publication date
US2030521A (en) 1936-02-11
GB225218A (en) 1925-09-24

Similar Documents

Publication Publication Date Title
FR674313A (en) Electric discharge tube
FR30909E (en) Electric discharge tube
FR574189A (en) Improvements to electric discharge tubes
FR649051A (en) Electric discharge tube
FR669314A (en) Electric discharge tube
FR577242A (en) Electric discharge tube
FR619303A (en) Enclosed Arc Electric Discharge Tube
FR644835A (en) Improvements to luminescent electric discharge tubes
FR573024A (en) Improvements made to electric discharge tubes
FR588275A (en) Improvements to electric discharge tubes
FR668025A (en) Electric discharge tube
FR570561A (en) Electric discharge tube
FR612839A (en) Electric discharge tube
FR571486A (en) Circuits for use with electric discharge tubes
FR30753E (en) Improvements to electric discharge tubes
FR606292A (en) Improvements to electric discharge tubes
FR571011A (en) Improvements to electric discharge tubes
FR640517A (en) Electric discharge tube
FR629627A (en) Electric discharge tube
FR556723A (en) Multiple electrode electric discharge tubes
FR31908E (en) Improvements to electric discharge tubes
FR31086E (en) Improvements to electric discharge tubes
FR576015A (en) Gas-filled electric lamps
FR642557A (en) Electric discharge tube
FR658896A (en) Electric discharge tube