GB189847A - An incandescent electric lamp - Google Patents

An incandescent electric lamp

Info

Publication number
GB189847A
GB189847A GB22906/21A GB2290621A GB189847A GB 189847 A GB189847 A GB 189847A GB 22906/21 A GB22906/21 A GB 22906/21A GB 2290621 A GB2290621 A GB 2290621A GB 189847 A GB189847 A GB 189847A
Authority
GB
United Kingdom
Prior art keywords
electric lamp
incandescent electric
nishomoto
comptroller
bulbs
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
GB22906/21A
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
Priority to GB22906/21A priority Critical patent/GB189847A/en
Priority to FR541068D priority patent/FR541068A/en
Publication of GB189847A publication Critical patent/GB189847A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

189,847. Nishomoto, K. Aug. 29, 1921. Bulbs. - Metal-filament gas-filled lamps of the kind provided with double walls 1. 2, the space enclosed thereby being evacuated, are provided with filaments made by the process described in Specification 7829/15. Reference has b e e n directed by the Comptroller to Specifications 24029/13 and 143,676.
GB22906/21A 1921-08-29 1921-08-29 An incandescent electric lamp Expired GB189847A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB22906/21A GB189847A (en) 1921-08-29 1921-08-29 An incandescent electric lamp
FR541068D FR541068A (en) 1921-08-29 1921-09-14 Improvements to incandescent electric lamps

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB22906/21A GB189847A (en) 1921-08-29 1921-08-29 An incandescent electric lamp
FR541068T 1921-09-14

Publications (1)

Publication Number Publication Date
GB189847A true GB189847A (en) 1922-11-29

Family

ID=10186969

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22906/21A Expired GB189847A (en) 1921-08-29 1921-08-29 An incandescent electric lamp

Country Status (2)

Country Link
FR (1) FR541068A (en)
GB (1) GB189847A (en)

Also Published As

Publication number Publication date
FR541068A (en) 1922-07-22

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