FR373405A - Device for daytime light projections - Google Patents
Device for daytime light projectionsInfo
- Publication number
- FR373405A FR373405A FR373405A FR373405DA FR373405A FR 373405 A FR373405 A FR 373405A FR 373405 A FR373405 A FR 373405A FR 373405D A FR373405D A FR 373405DA FR 373405 A FR373405 A FR 373405A
- Authority
- FR
- France
- Prior art keywords
- light projections
- daytime light
- daytime
- projections
- light
- 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
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
- G03B21/62—Translucent screens
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR373405T | 1907-01-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR373405A true FR373405A (en) | 1907-05-15 |
Family
ID=1420111
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR373405A Expired FR373405A (en) | 1907-01-09 | 1907-01-09 | Device for daytime light projections |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR373405A (en) |
-
1907
- 1907-01-09 FR FR373405A patent/FR373405A/en not_active Expired
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