JPS4916431A - - Google Patents
Info
- Publication number
- JPS4916431A JPS4916431A JP3417173A JP3417173A JPS4916431A JP S4916431 A JPS4916431 A JP S4916431A JP 3417173 A JP3417173 A JP 3417173A JP 3417173 A JP3417173 A JP 3417173A JP S4916431 A JPS4916431 A JP S4916431A
- Authority
- JP
- Japan
- 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.)
- Pending
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)
- Optical Elements Other Than Lenses (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US23831672A | 1972-03-27 | 1972-03-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4916431A true JPS4916431A (enExample) | 1974-02-13 |
Family
ID=22897374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3417173A Pending JPS4916431A (enExample) | 1972-03-27 | 1973-03-27 |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS4916431A (enExample) |
| CA (1) | CA971012A (enExample) |
| DE (1) | DE2314481A1 (enExample) |
| FR (1) | FR2178607A5 (enExample) |
| GB (1) | GB1429006A (enExample) |
| HK (1) | HK57576A (enExample) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH604205A5 (enExample) * | 1976-11-16 | 1978-08-31 | Landis & Gyr Ag |
-
1973
- 1973-02-08 CA CA163,271A patent/CA971012A/en not_active Expired
- 1973-03-16 FR FR7309441A patent/FR2178607A5/fr not_active Expired
- 1973-03-23 DE DE19732314481 patent/DE2314481A1/de active Pending
- 1973-03-26 GB GB1436673A patent/GB1429006A/en not_active Expired
- 1973-03-27 JP JP3417173A patent/JPS4916431A/ja active Pending
-
1976
- 1976-09-16 HK HK57576A patent/HK57576A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2178607A5 (enExample) | 1973-11-09 |
| GB1429006A (en) | 1976-03-24 |
| CA971012A (en) | 1975-07-15 |
| DE2314481A1 (de) | 1973-10-04 |
| HK57576A (en) | 1976-09-24 |