FR564089A - Projector refinements - Google Patents

Projector refinements

Info

Publication number
FR564089A
FR564089A FR564089DA FR564089A FR 564089 A FR564089 A FR 564089A FR 564089D A FR564089D A FR 564089DA FR 564089 A FR564089 A FR 564089A
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
Other languages
French (fr)
Inventor
States Lee Lebby
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 filed Critical
Application granted granted Critical
Publication of FR564089A publication Critical patent/FR564089A/en
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
    • F21V7/00—Reflectors for light sources

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR564089D 1923-03-19 1923-03-19 Projector refinements Expired FR564089A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR564089T 1923-03-19

Publications (1)

Publication Number Publication Date
FR564089A true FR564089A (en) 1923-12-20

Family

ID=8945520

Family Applications (1)

Application Number Title Priority Date Filing Date
FR564089D Expired FR564089A (en) 1923-03-19 1923-03-19 Projector refinements

Country Status (1)

Country Link
FR (1) FR564089A (en)

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