FR471259A - Electric lamps - Google Patents

Electric lamps

Info

Publication number
FR471259A
FR471259A FR471259A FR471259DA FR471259A FR 471259 A FR471259 A FR 471259A FR 471259 A FR471259 A FR 471259A FR 471259D A FR471259D A FR 471259DA FR 471259 A FR471259 A FR 471259A
Authority
FR
France
Prior art keywords
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
FR471259A
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 FR471259A publication Critical patent/FR471259A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/52—Means for obtaining or maintaining the desired pressure within the vessel
    • H01K1/54—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering
FR471259A 1913-04-24 1914-04-23 Electric lamps Expired FR471259A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US471259XA 1913-04-24 1913-04-24

Publications (1)

Publication Number Publication Date
FR471259A true FR471259A (en) 1914-10-21

Family

ID=32578923

Family Applications (1)

Application Number Title Priority Date Filing Date
FR471259A Expired FR471259A (en) 1913-04-24 1914-04-23 Electric lamps

Country Status (2)

Country Link
FR (1) FR471259A (en)
GB (1) GB191318447A (en)

Also Published As

Publication number Publication date
GB191318447A (en) 1914-08-07

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