FR64444E - Improvement in projection devices - Google Patents

Improvement in projection devices

Info

Publication number
FR64444E
FR64444E FR64444DA FR64444E FR 64444 E FR64444 E FR 64444E FR 64444D A FR64444D A FR 64444DA FR 64444 E FR64444 E FR 64444E
Authority
FR
France
Prior art keywords
improvement
projection devices
projection
devices
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
Alberic Plocq
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 FR64444E publication Critical patent/FR64444E/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
FR64444D 1953-07-01 1953-07-01 Improvement in projection devices Expired FR64444E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR64444T 1953-07-01

Publications (1)

Publication Number Publication Date
FR64444E true FR64444E (en) 1955-11-10

Family

ID=8697518

Family Applications (1)

Application Number Title Priority Date Filing Date
FR64444D Expired FR64444E (en) 1953-07-01 1953-07-01 Improvement in projection devices

Country Status (1)

Country Link
FR (1) FR64444E (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3011397A (en) * 1959-01-08 1961-12-05 Kamera & Kinowerke Dresden Veb Small-size projector
US3084594A (en) * 1961-05-05 1963-04-09 Leonard S Ray Opaque projection apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3011397A (en) * 1959-01-08 1961-12-05 Kamera & Kinowerke Dresden Veb Small-size projector
US3084594A (en) * 1961-05-05 1963-04-09 Leonard S Ray Opaque projection apparatus

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