FR514818A - Perfectionnements aux projecteurs - Google Patents

Perfectionnements aux projecteurs

Info

Publication number
FR514818A
FR514818A FR514818A FR514818DA FR514818A FR 514818 A FR514818 A FR 514818A FR 514818 A FR514818 A FR 514818A FR 514818D A FR514818D A FR 514818DA FR 514818 A FR514818 A FR 514818A
Authority
FR
France
Prior art keywords
refinements
projector
projector refinements
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
FR514818A
Other languages
English (en)
Inventor
Charles Algernon Parsons
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR514818A publication Critical patent/FR514818A/fr
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • 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
    • H05B31/36—Electric arc lamps having two electrodes in line

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR514818A 1919-07-09 1920-05-01 Perfectionnements aux projecteurs Expired FR514818A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB514818X 1919-07-09

Publications (1)

Publication Number Publication Date
FR514818A true FR514818A (fr) 1921-03-19

Family

ID=10460199

Family Applications (1)

Application Number Title Priority Date Filing Date
FR514818A Expired FR514818A (fr) 1919-07-09 1920-05-01 Perfectionnements aux projecteurs

Country Status (1)

Country Link
FR (1) FR514818A (fr)

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