FR400613A - Improvements to incandescent electric lamps - Google Patents

Improvements to incandescent electric lamps

Info

Publication number
FR400613A
FR400613A FR400613DA FR400613A FR 400613 A FR400613 A FR 400613A FR 400613D A FR400613D A FR 400613DA FR 400613 A FR400613 A FR 400613A
Authority
FR
France
Prior art keywords
electric lamps
incandescent electric
incandescent
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)
Inventor
Julien Grand
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.)
JULIEN GRAND
Original Assignee
JULIEN GRAND
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 JULIEN GRAND filed Critical JULIEN GRAND
Application granted granted Critical
Publication of FR400613A publication Critical patent/FR400613A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K9/00—Lamps having two or more incandescent bodies separately heated
    • H01K9/02—Lamps having two or more incandescent bodies separately heated to provide substitution in the event of failure of one of the bodies
FR400613D 1908-06-12 1908-06-12 Improvements to incandescent electric lamps Expired FR400613A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR400613T 1908-06-12

Publications (1)

Publication Number Publication Date
FR400613A true FR400613A (en) 1909-08-02

Family

ID=1445479

Family Applications (1)

Application Number Title Priority Date Filing Date
FR400613D Expired FR400613A (en) 1908-06-12 1908-06-12 Improvements to incandescent electric lamps

Country Status (1)

Country Link
FR (1) FR400613A (en)

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