FR7213E - Device for daytime light projections - Google Patents

Device for daytime light projections

Info

Publication number
FR7213E
FR7213E FR7213A FR7213DA FR7213E FR 7213 E FR7213 E FR 7213E FR 7213 A FR7213 A FR 7213A FR 7213D A FR7213D A FR 7213DA FR 7213 E FR7213 E FR 7213E
Authority
FR
France
Prior art keywords
light projections
daytime light
daytime
projections
light
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
FR7213A
Other languages
French (fr)
Inventor
Auguste Quentin
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 FR7213E publication Critical patent/FR7213E/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/62—Translucent screens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR7213A 1907-01-09 1907-01-22 Device for daytime light projections Expired FR7213E (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR373405T 1907-01-09
FR7213T 1907-01-22

Publications (1)

Publication Number Publication Date
FR7213E true FR7213E (en) 1907-06-13

Family

ID=1350054

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7213A Expired FR7213E (en) 1907-01-09 1907-01-22 Device for daytime light projections

Country Status (1)

Country Link
FR (1) FR7213E (en)

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