FR712539A - Improvements to incandescent electric lamps - Google Patents

Improvements to incandescent electric lamps

Info

Publication number
FR712539A
FR712539A FR712539DA FR712539A FR 712539 A FR712539 A FR 712539A FR 712539D A FR712539D A FR 712539DA FR 712539 A FR712539 A FR 712539A
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)
Inventor
Charles Tourne
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 filed Critical
Application granted granted Critical
Publication of FR712539A publication Critical patent/FR712539A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/14—Incandescent bodies characterised by the shape
FR712539D 1930-06-17 1930-06-17 Improvements to incandescent electric lamps Expired FR712539A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR712539T 1930-06-17

Publications (1)

Publication Number Publication Date
FR712539A true FR712539A (en) 1931-10-03

Family

ID=9080196

Family Applications (1)

Application Number Title Priority Date Filing Date
FR712539D Expired FR712539A (en) 1930-06-17 1930-06-17 Improvements to incandescent electric lamps

Country Status (1)

Country Link
FR (1) FR712539A (en)

Similar Documents

Publication Publication Date Title
FR630354A (en) Improvements to incandescent electric lamps
FR775464A (en) Improvements to incandescent electric lamps
FR677066A (en) Improvements to incandescent electric lamps
FR626027A (en) Improvements to incandescent electric lamps
FR624050A (en) Improvements to incandescent electric lamps
FR621135A (en) Improvements to incandescent electric lamps
FR702874A (en) Incandescent lamp improvements
FR616189A (en) Improvements to incandescent electric lamps
FR712539A (en) Improvements to incandescent electric lamps
FR660796A (en) Improvement in incandescent lamps
FR747957A (en) Improvements to incandescent electric lamps
FR716157A (en) Improvements to incandescent lamp sockets
FR757340A (en) Improvements to incandescent electric lamps
FR705272A (en) Improvements to incandescent electric lamps or discharge tubes
FR830241A (en) Improvements to incandescent electric lamps
FR631452A (en) Improvements to incandescent electric lamps
FR628329A (en) Improvements to incandescent electric lamps
FR688252A (en) Incandescent lamp improvements
FR756633A (en) Improvements to incandescent electric lamps
FR801118A (en) Improvements to incandescent electric lamps
FR717894A (en) Improvements to incandescent electric lamps
FR666475A (en) Improvements to incandescent electric lamps
FR675671A (en) Improvements to incandescent electric lamps
FR676233A (en) Improvements to incandescent electric lamps
FR763213A (en) Improvements to incandescent electric lamps