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FR784677A - Mercury vapor lamp more particularly intended for projection - Google Patents

Mercury vapor lamp more particularly intended for projection

Info

Publication number
FR784677A
FR784677A FR784677DA FR784677A FR 784677 A FR784677 A FR 784677A FR 784677D A FR784677D A FR 784677DA FR 784677 A FR784677 A FR 784677A
Authority
FR
France
Prior art keywords
projection
mercury vapor
vapor lamp
particularly intended
lamp
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 FR784677A publication Critical patent/FR784677A/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
    • H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
    • H01J61/822—High-pressure mercury lamps
FR784677D 1934-02-05 1935-01-25 Mercury vapor lamp more particularly intended for projection Expired FR784677A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE434919X 1934-02-05

Publications (1)

Publication Number Publication Date
FR784677A true FR784677A (en) 1935-07-22

Family

ID=6506703

Family Applications (1)

Application Number Title Priority Date Filing Date
FR784677D Expired FR784677A (en) 1934-02-05 1935-01-25 Mercury vapor lamp more particularly intended for projection

Country Status (3)

Country Link
US (1) US2116741A (en)
FR (1) FR784677A (en)
GB (1) GB434919A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL183069C (en) * 1979-04-26 1988-07-01 Mitsubishi Electric Corp METAL VAPOR DISCHARGE LAMP.

Also Published As

Publication number Publication date
US2116741A (en) 1938-05-10
GB434919A (en) 1935-09-11

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