FR2177155A5 - - Google Patents

Info

Publication number
FR2177155A5
FR2177155A5 FR7209824A FR7209824A FR2177155A5 FR 2177155 A5 FR2177155 A5 FR 2177155A5 FR 7209824 A FR7209824 A FR 7209824A FR 7209824 A FR7209824 A FR 7209824A FR 2177155 A5 FR2177155 A5 FR 2177155A5
Authority
FR
France
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
FR7209824A
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.)
BELZACQ FRERES ETS
Original Assignee
BELZACQ FRERES ETS
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 BELZACQ FRERES ETS filed Critical BELZACQ FRERES ETS
Priority to FR7209824A priority Critical patent/FR2177155A5/fr
Application granted granted Critical
Publication of FR2177155A5 publication Critical patent/FR2177155A5/fr
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
    • G03B21/58—Projection screens collapsible, e.g. foldable; of variable area

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR7209824A 1972-03-21 1972-03-21 Expired FR2177155A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7209824A FR2177155A5 (en) 1972-03-21 1972-03-21

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7209824A FR2177155A5 (en) 1972-03-21 1972-03-21

Publications (1)

Publication Number Publication Date
FR2177155A5 true FR2177155A5 (en) 1973-11-02

Family

ID=9095565

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7209824A Expired FR2177155A5 (en) 1972-03-21 1972-03-21

Country Status (1)

Country Link
FR (1) FR2177155A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2287827A1 (en) * 2009-03-20 2011-02-23 Skyline Displays, Inc. Projection Backwall Apparatus and System

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2287827A1 (en) * 2009-03-20 2011-02-23 Skyline Displays, Inc. Projection Backwall Apparatus and System
US8045264B2 (en) 2009-03-20 2011-10-25 Skyline Displays, Inc. Projection backwall apparatus and system

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Legal Events

Date Code Title Description
ST Notification of lapse