FR703655A - Improvements to incandescent electric lamps - Google Patents

Improvements to incandescent electric lamps

Info

Publication number
FR703655A
FR703655A FR703655DA FR703655A FR 703655 A FR703655 A FR 703655A FR 703655D A FR703655D A FR 703655DA FR 703655 A FR703655 A FR 703655A
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
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 FR703655A publication Critical patent/FR703655A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
FR703655D 1926-12-21 1930-10-13 Improvements to incandescent electric lamps Expired FR703655A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1688777X 1926-12-21
NL359712X 1929-11-23

Publications (1)

Publication Number Publication Date
FR703655A true FR703655A (en) 1931-05-04

Family

ID=26643676

Family Applications (1)

Application Number Title Priority Date Filing Date
FR703655D Expired FR703655A (en) 1926-12-21 1930-10-13 Improvements to incandescent electric lamps

Country Status (5)

Country Link
US (1) US1688777A (en)
BE (1) BE374146A (en)
DE (1) DE535089C (en)
FR (1) FR703655A (en)
GB (1) GB359712A (en)

Also Published As

Publication number Publication date
US1688777A (en) 1928-10-23
BE374146A (en)
GB359712A (en) 1931-10-29
DE535089C (en) 1931-10-05

Similar Documents

Publication Publication Date Title
FR630354A (en) Improvements to incandescent electric lamps
FR677066A (en) Improvements to incandescent electric lamps
FR624050A (en) Improvements to incandescent electric lamps
FR626027A (en) Improvements to incandescent electric lamps
FR621135A (en) Improvements to incandescent electric lamps
FR623708A (en) Incandescent electric lamps
FR616189A (en) Improvements to incandescent electric lamps
FR631452A (en) Improvements to incandescent electric lamps
FR628329A (en) Improvements to incandescent electric lamps
FR635382A (en) Improvements to incandescent electric lamps
FR703655A (en) Improvements to incandescent electric lamps
FR635383A (en) Improvements to incandescent electric lamps
FR702874A (en) Incandescent lamp improvements
FR648455A (en) Improvements to projectors including incandescent electric lamps
FR705272A (en) Improvements to incandescent electric lamps or discharge tubes
FR663300A (en) Improvements to incandescent electric lamps
FR609545A (en) Incandescent lamp improvements
FR634102A (en) Incandescent lamp improvements
FR617198A (en) Improvements to incandescent electric lamps
FR665272A (en) Improvements to incandescent electric lamps and their supports
FR570440A (en) Improvements to incandescent electric lamps
FR577428A (en) Improvements to incandescent electric lamps
FR676233A (en) Improvements to incandescent electric lamps
FR675671A (en) Improvements to incandescent electric lamps
FR666475A (en) Improvements to incandescent electric lamps