NL7707717A - LIGHT IMAGE PROJECT SCREEN. - Google Patents
LIGHT IMAGE PROJECT SCREEN.Info
- Publication number
- NL7707717A NL7707717A NL7707717A NL7707717A NL7707717A NL 7707717 A NL7707717 A NL 7707717A NL 7707717 A NL7707717 A NL 7707717A NL 7707717 A NL7707717 A NL 7707717A NL 7707717 A NL7707717 A NL 7707717A
- Authority
- NL
- Netherlands
- Prior art keywords
- light image
- project screen
- image project
- screen
- light
- Prior art date
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
- G03B21/58—Projection screens collapsible, e.g. foldable; of variable area
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772716349 DE2716349A1 (en) | 1977-04-13 | 1977-04-13 | LIGHT IMAGE PROJECTION WALL |
Publications (1)
Publication Number | Publication Date |
---|---|
NL7707717A true NL7707717A (en) | 1978-10-17 |
Family
ID=6006204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7707717A NL7707717A (en) | 1977-04-13 | 1977-07-11 | LIGHT IMAGE PROJECT SCREEN. |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE2716349A1 (en) |
FR (1) | FR2387468A1 (en) |
GB (1) | GB1583279A (en) |
IT (1) | IT1083799B (en) |
NL (1) | NL7707717A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3115177C1 (en) * | 1981-04-15 | 1982-11-11 | Reflecta Gmbh Foto Film Projektion, 8540 Schwabach | Projection screen |
US5462506A (en) * | 1992-09-24 | 1995-10-31 | Joshua Group Ltd. | Lateral movement trainer selectively positionable for storage or use |
-
1977
- 1977-04-13 DE DE19772716349 patent/DE2716349A1/en not_active Withdrawn
- 1977-07-11 NL NL7707717A patent/NL7707717A/en not_active Application Discontinuation
- 1977-07-12 GB GB29254/77A patent/GB1583279A/en not_active Expired
- 1977-07-14 IT IT25749/77A patent/IT1083799B/en active
- 1977-08-16 FR FR7725018A patent/FR2387468A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
IT1083799B (en) | 1985-05-25 |
DE2716349A1 (en) | 1978-10-19 |
FR2387468A1 (en) | 1978-11-10 |
GB1583279A (en) | 1981-01-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BV | The patent application has lapsed |