FR540831A - Improvements to arc lamps - Google Patents

Improvements to arc lamps

Info

Publication number
FR540831A
FR540831A FR540831DA FR540831A FR 540831 A FR540831 A FR 540831A FR 540831D A FR540831D A FR 540831DA FR 540831 A FR540831 A FR 540831A
Authority
FR
France
Prior art keywords
arc lamps
lamps
arc
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 FR540831A publication Critical patent/FR540831A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B31/00—Electric arc lamps
    • H05B31/003—Electric arc lamps of a special type
    • H05B31/0036—Electric arc lamps of a special type for projection, copying or stage lighting
FR540831D 1920-09-21 1921-07-25 Improvements to arc lamps Expired FR540831A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US540831XA 1920-09-21 1920-09-21

Publications (1)

Publication Number Publication Date
FR540831A true FR540831A (en) 1922-07-18

Family

ID=21988693

Family Applications (1)

Application Number Title Priority Date Filing Date
FR540831D Expired FR540831A (en) 1920-09-21 1921-07-25 Improvements to arc lamps

Country Status (1)

Country Link
FR (1) FR540831A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1082980B (en) * 1953-02-20 1960-06-09 Nu Arc Company Self-regulating carbon arc lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1082980B (en) * 1953-02-20 1960-06-09 Nu Arc Company Self-regulating carbon arc lamp

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