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FR520036A - Improvements in incandescent electric lamps - Google Patents

Improvements in incandescent electric lamps

Info

Publication number
FR520036A
FR520036A FR520036A FR520036DA FR520036A FR 520036 A FR520036 A FR 520036A FR 520036 A FR520036 A FR 520036A FR 520036D A FR520036D A FR 520036DA FR 520036 A FR520036 A FR 520036A
Authority
FR
France
Prior art keywords
electric lamps
incandescent electric
incandescent
lamps
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
FR520036A
Other languages
French (fr)
Inventor
William J Cameron
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR520036A publication Critical patent/FR520036A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K7/00—Lamps for purposes other than general lighting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/34—Double wall vessels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
FR520036A 1916-02-14 1920-07-09 Improvements in incandescent electric lamps Expired FR520036A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US146474XA 1916-02-14 1916-02-14

Publications (1)

Publication Number Publication Date
FR520036A true FR520036A (en) 1921-06-18

Family

ID=21766792

Family Applications (1)

Application Number Title Priority Date Filing Date
FR520036A Expired FR520036A (en) 1916-02-14 1920-07-09 Improvements in incandescent electric lamps

Country Status (2)

Country Link
FR (1) FR520036A (en)
GB (1) GB146474A (en)

Also Published As

Publication number Publication date
GB146474A (en) 1921-09-29

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