NL7204111A - - Google Patents
Info
- Publication number
- NL7204111A NL7204111A NL7204111A NL7204111A NL7204111A NL 7204111 A NL7204111 A NL 7204111A NL 7204111 A NL7204111 A NL 7204111A NL 7204111 A NL7204111 A NL 7204111A NL 7204111 A NL7204111 A NL 7204111A
- Authority
- NL
- Netherlands
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB808771 | 1971-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7204111A true NL7204111A (fr) | 1972-10-03 |
Family
ID=9845511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7204111A NL7204111A (fr) | 1971-03-29 | 1972-03-27 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE781336A (fr) |
| DE (1) | DE2214638A1 (fr) |
| FR (1) | FR2131698A5 (fr) |
| IT (1) | IT953572B (fr) |
| NL (1) | NL7204111A (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996021883A2 (fr) * | 1995-01-14 | 1996-07-18 | Optica Nova Onab Ab | Ecran de projection |
| CN110554558A (zh) * | 2018-05-31 | 2019-12-10 | 深圳光峰科技股份有限公司 | 一种高对比度反射屏幕 |
-
1972
- 1972-03-25 IT IT2250072A patent/IT953572B/it active
- 1972-03-25 DE DE19722214638 patent/DE2214638A1/de active Pending
- 1972-03-27 NL NL7204111A patent/NL7204111A/xx unknown
- 1972-03-28 FR FR7210916A patent/FR2131698A5/fr not_active Expired
- 1972-03-28 BE BE781336A patent/BE781336A/fr unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IT953572B (it) | 1973-08-10 |
| BE781336A (fr) | 1972-07-17 |
| DE2214638A1 (de) | 1972-10-12 |
| FR2131698A5 (en) | 1972-11-10 |