FR488890A - Improvements to cinematographs - Google Patents
Improvements to cinematographsInfo
- Publication number
- FR488890A FR488890A FR488890DA FR488890A FR 488890 A FR488890 A FR 488890A FR 488890D A FR488890D A FR 488890DA FR 488890 A FR488890 A FR 488890A
- Authority
- FR
- France
- Prior art keywords
- cinematographs
- 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
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
- G03B21/32—Details specially adapted for motion-picture projection
-
- 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
- G03B23/00—Devices for changing pictures in viewing apparatus or projectors
- G03B23/08—Devices for changing pictures in viewing apparatus or projectors in which pictures are attached to a movable carrier
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR488890T | 1918-02-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR488890A true FR488890A (en) | 1918-11-21 |
Family
ID=1525194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR488890D Expired FR488890A (en) | 1918-02-11 | 1918-02-11 | Improvements to cinematographs |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR488890A (en) |
-
1918
- 1918-02-11 FR FR488890D patent/FR488890A/en not_active Expired
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