FR1144340A - Perfectionnement aux sources d'éclairage par incandescence - Google Patents

Perfectionnement aux sources d'éclairage par incandescence

Info

Publication number
FR1144340A
FR1144340A FR1144340DA FR1144340A FR 1144340 A FR1144340 A FR 1144340A FR 1144340D A FR1144340D A FR 1144340DA FR 1144340 A FR1144340 A FR 1144340A
Authority
FR
France
Prior art keywords
improvement
lighting sources
incandescent lighting
incandescent
sources
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
English (en)
Inventor
Jean Royer
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 FR1144340A publication Critical patent/FR1144340A/fr
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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/26—Screens; Filters
FR1144340D 1956-02-11 1956-02-11 Perfectionnement aux sources d'éclairage par incandescence Expired FR1144340A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1144340T 1956-02-11

Publications (1)

Publication Number Publication Date
FR1144340A true FR1144340A (fr) 1957-10-11

Family

ID=9644377

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1144340D Expired FR1144340A (fr) 1956-02-11 1956-02-11 Perfectionnement aux sources d'éclairage par incandescence

Country Status (2)

Country Link
FR (1) FR1144340A (fr)
NL (1) NL214467A (fr)

Also Published As

Publication number Publication date
NL214467A (fr)

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