CS174342B1 - - Google Patents
Info
- Publication number
- CS174342B1 CS174342B1 CS6771A CS677172A CS174342B1 CS 174342 B1 CS174342 B1 CS 174342B1 CS 6771 A CS6771 A CS 6771A CS 677172 A CS677172 A CS 677172A CS 174342 B1 CS174342 B1 CS 174342B1
- Authority
- CS
- Czechoslovakia
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
- G03B21/602—Lenticular screens
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 |
|---|---|---|---|
| DD15814371 | 1971-10-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS174342B1 true CS174342B1 (en) | 1977-03-31 |
Family
ID=5484418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS6771A CS174342B1 (en) | 1971-10-06 | 1972-10-06 |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT329899B (en) |
| CH (1) | CH556553A (en) |
| CS (1) | CS174342B1 (en) |
| DE (2) | DE2203707A1 (en) |
| FR (1) | FR2155189A5 (en) |
| SE (1) | SE373675B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52130325A (en) * | 1976-04-23 | 1977-11-01 | Schudel Conrad | Movie screen |
| US4206969A (en) * | 1979-04-11 | 1980-06-10 | Minnesota Mining And Manufacturing Company | Directional front projection screen |
-
1972
- 1972-01-27 DE DE2203707A patent/DE2203707A1/en active Pending
- 1972-03-10 FR FR7208547A patent/FR2155189A5/fr not_active Expired
- 1972-07-25 DE DE19727227494U patent/DE7227494U/en not_active Expired
- 1972-07-27 AT AT646372A patent/AT329899B/en not_active IP Right Cessation
- 1972-08-30 SE SE7211237A patent/SE373675B/en unknown
- 1972-09-27 CH CH1412872A patent/CH556553A/en not_active IP Right Cessation
- 1972-10-06 CS CS6771A patent/CS174342B1/cs unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AT329899B (en) | 1976-06-10 |
| FR2155189A5 (en) | 1973-05-18 |
| SE373675B (en) | 1975-02-10 |
| DE2203707A1 (en) | 1973-04-12 |
| DE7227494U (en) | 1972-10-12 |
| CH556553A (en) | 1974-11-29 |
| ATA646372A (en) | 1975-08-15 |