FR55586E - Improvement in electric lamps - Google Patents

Improvement in electric lamps

Info

Publication number
FR55586E
FR55586E FR55586DA FR55586E FR 55586 E FR55586 E FR 55586E FR 55586D A FR55586D A FR 55586DA FR 55586 E FR55586 E FR 55586E
Authority
FR
France
Prior art keywords
improvement
electric lamps
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.)
MACHAL PROJECTEURS
Original Assignee
MACHAL PROJECTEURS
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 MACHAL PROJECTEURS filed Critical MACHAL PROJECTEURS
Application granted granted Critical
Publication of FR55586E publication Critical patent/FR55586E/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
    • H01K1/325—Reflecting coating
FR55586D 1942-10-15 1942-10-15 Improvement in electric lamps Expired FR55586E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR55586T 1942-10-15

Publications (1)

Publication Number Publication Date
FR55586E true FR55586E (en) 1952-09-01

Family

ID=8689889

Family Applications (1)

Application Number Title Priority Date Filing Date
FR55586D Expired FR55586E (en) 1942-10-15 1942-10-15 Improvement in electric lamps

Country Status (1)

Country Link
FR (1) FR55586E (en)

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