FR777012A - Improvements to electric lighting lamps - Google Patents

Improvements to electric lighting lamps

Info

Publication number
FR777012A
FR777012A FR777012DA FR777012A FR 777012 A FR777012 A FR 777012A FR 777012D A FR777012D A FR 777012DA FR 777012 A FR777012 A FR 777012A
Authority
FR
France
Prior art keywords
lighting lamps
electric lighting
electric
lamps
lighting
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
Raymond Dubourg
Maurice Dubourg
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 FR777012A publication Critical patent/FR777012A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/30—Envelopes; Vessels incorporating lenses
FR777012D 1933-10-31 1933-10-31 Improvements to electric lighting lamps Expired FR777012A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR777012T 1933-10-31

Publications (1)

Publication Number Publication Date
FR777012A true FR777012A (en) 1935-02-09

Family

ID=9201364

Family Applications (1)

Application Number Title Priority Date Filing Date
FR777012D Expired FR777012A (en) 1933-10-31 1933-10-31 Improvements to electric lighting lamps

Country Status (1)

Country Link
FR (1) FR777012A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4734836A (en) * 1984-09-29 1988-03-29 Masataka Negishi Lighting apparatus
DE102005018454A1 (en) * 2005-04-20 2006-11-09 Deutsche Mechatronics Gmbh Radiant heaters

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4734836A (en) * 1984-09-29 1988-03-29 Masataka Negishi Lighting apparatus
DE102005018454A1 (en) * 2005-04-20 2006-11-09 Deutsche Mechatronics Gmbh Radiant heaters

Similar Documents

Publication Publication Date Title
FR758644A (en) Improvements to electric lamps
FR779256A (en) Improvements to electric lamps
FR775464A (en) Improvements to incandescent electric lamps
FR777012A (en) Improvements to electric lighting lamps
FR784894A (en) Improvements to electric lamps
FR765953A (en) roadway lighting
FR824594A (en) Improvements to electric lamps
FR771080A (en) Special lighting support
FR749053A (en) Improvements to electronic lamps
FR757340A (en) Improvements to incandescent electric lamps
FR787140A (en) Improvements to lighting lamps
FR765884A (en) Improvements to light reflectors
FR755136A (en) Improvements to thermo-ionic lamps
FR770030A (en) Improvements to electric lamps
FR778959A (en) Improvements to electric lamps
FR780954A (en) Improvements to electric lamps
FR761140A (en) Improvements to electric lighting devices
FR761010A (en) Improvements to illumination sockets
FR768352A (en) Improvements to reflectors for lighting
FR796006A (en) Improvements to electric lamps
FR44068E (en) Improvements to lighting devices
FR768641A (en) Improvements to electric pocket lamps
FR763213A (en) Improvements to incandescent electric lamps
FR774846A (en) Lighting installation
FR779952A (en) Improvements to self-supporting electric lights