FR588104A - Improvement in plates for projection devices - Google Patents

Improvement in plates for projection devices

Info

Publication number
FR588104A
FR588104A FR588104DA FR588104A FR 588104 A FR588104 A FR 588104A FR 588104D A FR588104D A FR 588104DA FR 588104 A FR588104 A FR 588104A
Authority
FR
France
Prior art keywords
improvement
plates
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
John Ripley Freeman
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 FR588104A publication Critical patent/FR588104A/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
    • G03B21/64—Means for mounting individual pictures to be projected, e.g. frame for transparency

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
FR588104D 1923-11-10 1924-10-27 Improvement in plates for projection devices Expired FR588104A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US224523XA 1923-11-10 1923-11-10

Publications (1)

Publication Number Publication Date
FR588104A true FR588104A (en) 1925-04-30

Family

ID=21809664

Family Applications (1)

Application Number Title Priority Date Filing Date
FR588104D Expired FR588104A (en) 1923-11-10 1924-10-27 Improvement in plates for projection devices

Country Status (2)

Country Link
FR (1) FR588104A (en)
GB (1) GB224523A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1098238B (en) * 1958-10-14 1961-01-26 Erich Zillmer Display device for projector with picture magazine switched step by step from the picture change slide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1098238B (en) * 1958-10-14 1961-01-26 Erich Zillmer Display device for projector with picture magazine switched step by step from the picture change slide

Also Published As

Publication number Publication date
GB224523A (en) 1925-05-21

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