FR439574A - Lampe-projecteur - Google Patents

Lampe-projecteur

Info

Publication number
FR439574A
FR439574A FR439574DA FR439574A FR 439574 A FR439574 A FR 439574A FR 439574D A FR439574D A FR 439574DA FR 439574 A FR439574 A FR 439574A
Authority
FR
France
Prior art keywords
projector lamp
projector
lamp
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)
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.)
JULES GROUVELLE H ARQUEMBOURG ET CIE Ste
Original Assignee
JULES GROUVELLE H ARQUEMBOURG ET CIE Ste
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 JULES GROUVELLE H ARQUEMBOURG ET CIE Ste filed Critical JULES GROUVELLE H ARQUEMBOURG ET CIE Ste
Application granted granted Critical
Publication of FR439574A publication Critical patent/FR439574A/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
    • H01K1/325—Reflecting coating
FR439574D 1912-01-31 1912-01-31 Lampe-projecteur Expired FR439574A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR439574T 1912-01-31

Publications (1)

Publication Number Publication Date
FR439574A true FR439574A (fr) 1912-06-17

Family

ID=1480994

Family Applications (1)

Application Number Title Priority Date Filing Date
FR439574D Expired FR439574A (fr) 1912-01-31 1912-01-31 Lampe-projecteur

Country Status (1)

Country Link
FR (1) FR439574A (fr)

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