CH556553A - SCREEN FOR PROJECTION PURPOSES. - Google Patents
SCREEN FOR PROJECTION PURPOSES.Info
- Publication number
- CH556553A CH556553A CH1412872A CH1412872A CH556553A CH 556553 A CH556553 A CH 556553A CH 1412872 A CH1412872 A CH 1412872A CH 1412872 A CH1412872 A CH 1412872A CH 556553 A CH556553 A CH 556553A
- Authority
- CH
- Switzerland
- Prior art keywords
- screen
- projection purposes
- projection
- purposes
- 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
- G03B21/60—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 |
---|---|
CH556553A true CH556553A (en) | 1974-11-29 |
Family
ID=5484418
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1412872A CH556553A (en) | 1971-10-06 | 1972-09-27 | SCREEN FOR PROJECTION PURPOSES. |
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 |
CS174342B1 (en) | 1977-03-31 |
ATA646372A (en) | 1975-08-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |