FR452473A - Incandescent lamp improvements - Google Patents

Incandescent lamp improvements

Info

Publication number
FR452473A
FR452473A FR452473DA FR452473A FR 452473 A FR452473 A FR 452473A FR 452473D A FR452473D A FR 452473DA FR 452473 A FR452473 A FR 452473A
Authority
FR
France
Prior art keywords
incandescent lamp
incandescent
lamp
lamp improvements
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR452473A publication Critical patent/FR452473A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/26—Screens; Filters
FR452473D 1912-12-28 1912-12-28 Incandescent lamp improvements Expired FR452473A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR452473T 1912-12-28

Publications (1)

Publication Number Publication Date
FR452473A true FR452473A (en) 1913-05-17

Family

ID=1492693

Family Applications (1)

Application Number Title Priority Date Filing Date
FR452473D Expired FR452473A (en) 1912-12-28 1912-12-28 Incandescent lamp improvements

Country Status (1)

Country Link
FR (1) FR452473A (en)

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