FR746249A - Electric lamp with semi-indirect lighting - Google Patents

Electric lamp with semi-indirect lighting

Info

Publication number
FR746249A
FR746249A FR746249DA FR746249A FR 746249 A FR746249 A FR 746249A FR 746249D A FR746249D A FR 746249DA FR 746249 A FR746249 A FR 746249A
Authority
FR
France
Prior art keywords
semi
electric lamp
indirect lighting
indirect
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
Lucien-Marcel Decouleur
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 FR746249A publication Critical patent/FR746249A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
FR746249D 1932-11-23 1932-11-23 Electric lamp with semi-indirect lighting Expired FR746249A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR746249T 1932-11-23

Publications (1)

Publication Number Publication Date
FR746249A true FR746249A (en) 1933-05-24

Family

ID=9147251

Family Applications (1)

Application Number Title Priority Date Filing Date
FR746249D Expired FR746249A (en) 1932-11-23 1932-11-23 Electric lamp with semi-indirect lighting

Country Status (1)

Country Link
FR (1) FR746249A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3225243A (en) * 1962-10-29 1965-12-21 William C Dauser Color lamp with spectral filter around filament

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3225243A (en) * 1962-10-29 1965-12-21 William C Dauser Color lamp with spectral filter around filament

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