FR821958A - Electric discharge tube - Google Patents

Electric discharge tube

Info

Publication number
FR821958A
FR821958A FR821958DA FR821958A FR 821958 A FR821958 A FR 821958A FR 821958D A FR821958D A FR 821958DA FR 821958 A FR821958 A FR 821958A
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 FR821958A publication Critical patent/FR821958A/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
    • H01J61/02—Details
    • H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel
    • H01J61/28—Means for producing, introducing, or replenishing gas or vapour during operation of the lamp
FR821958D 1936-05-18 1937-05-18 Electric discharge tube Expired FR821958A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE472307X 1936-05-18

Publications (1)

Publication Number Publication Date
FR821958A true FR821958A (en) 1937-12-17

Family

ID=6541397

Family Applications (1)

Application Number Title Priority Date Filing Date
FR821958D Expired FR821958A (en) 1936-05-18 1937-05-18 Electric discharge tube

Country Status (4)

Country Link
US (1) US2122285A (en)
FR (1) FR821958A (en)
GB (1) GB472307A (en)
NL (1) NL50082C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR964680A (en) * 1947-04-26 1950-08-22
US2820918A (en) * 1955-10-14 1958-01-21 Aronstein Robert Optical device for therapeutic and other purposes
US3284664A (en) * 1959-10-01 1966-11-08 Sylvania Electric Prod Pressure regulation of fluorescent lamps by peltier cooling means
US3309565A (en) * 1959-12-14 1967-03-14 Mc Graw Edison Co Light output of fluorescent lamps automatically held constant by means of peltier type coolers

Also Published As

Publication number Publication date
NL50082C (en)
GB472307A (en) 1937-09-21
US2122285A (en) 1938-06-28

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