FR536045A - Projection lamp - Google Patents

Projection lamp

Info

Publication number
FR536045A
FR536045A FR536045DA FR536045A FR 536045 A FR536045 A FR 536045A FR 536045D A FR536045D A FR 536045DA FR 536045 A FR536045 A FR 536045A
Authority
FR
France
Prior art keywords
projection lamp
lamp
projection
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)
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.)
Ritter & Uhlmann
Original Assignee
Ritter & Uhlmann
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 Ritter & Uhlmann filed Critical Ritter & Uhlmann
Application granted granted Critical
Publication of FR536045A publication Critical patent/FR536045A/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
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR536045D 1920-06-18 1921-05-27 Projection lamp Expired FR536045A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH536045X 1920-06-18

Publications (1)

Publication Number Publication Date
FR536045A true FR536045A (en) 1922-04-25

Family

ID=4518771

Family Applications (1)

Application Number Title Priority Date Filing Date
FR536045D Expired FR536045A (en) 1920-06-18 1921-05-27 Projection lamp

Country Status (1)

Country Link
FR (1) FR536045A (en)

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