FR50470E - Appareil de projection perfectionné - Google Patents
Appareil de projection perfectionnéInfo
- Publication number
- FR50470E FR50470E FR50470DA FR50470E FR 50470 E FR50470 E FR 50470E FR 50470D A FR50470D A FR 50470DA FR 50470 E FR50470 E FR 50470E
- Authority
- FR
- France
- Prior art keywords
- projection device
- advanced projection
- advanced
- 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
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
- G03B21/06—Projectors or projection-type viewers; Accessories therefor affording only episcopic projection
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR50470T | 1939-03-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR50470E true FR50470E (fr) | 1940-11-14 |
Family
ID=8685470
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR50470D Expired FR50470E (fr) | 1939-03-13 | 1939-03-13 | Appareil de projection perfectionné |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR50470E (fr) |
-
1939
- 1939-03-13 FR FR50470D patent/FR50470E/fr not_active Expired
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