JPS50115526A - - Google Patents
Info
- Publication number
- JPS50115526A JPS50115526A JP49020280A JP2028074A JPS50115526A JP S50115526 A JPS50115526 A JP S50115526A JP 49020280 A JP49020280 A JP 49020280A JP 2028074 A JP2028074 A JP 2028074A JP S50115526 A JPS50115526 A JP S50115526A
- 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.)
- Granted
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
- G03B21/14—Details
- G03B21/30—Details adapted to collapse or fold, e.g. for portability
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2028074A JPS5346449B2 (https=) | 1974-02-20 | 1974-02-20 | |
| US05/549,767 US3997258A (en) | 1974-02-20 | 1975-02-13 | Film reader |
| DE19752507014 DE2507014A1 (de) | 1974-02-20 | 1975-02-19 | Filmbetrachtungsgeraet |
| FR7505155A FR2261552A1 (en) | 1974-02-20 | 1975-02-19 | Folding microfilm reader - with flexible hood and hinged filter plate to seal reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2028074A JPS5346449B2 (https=) | 1974-02-20 | 1974-02-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS50115526A true JPS50115526A (https=) | 1975-09-10 |
| JPS5346449B2 JPS5346449B2 (https=) | 1978-12-14 |
Family
ID=12022742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2028074A Expired JPS5346449B2 (https=) | 1974-02-20 | 1974-02-20 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS5346449B2 (https=) |
| FR (1) | FR2261552A1 (https=) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4858746A (https=) * | 1971-11-24 | 1973-08-17 | ||
| JPS4865226U (https=) * | 1971-11-24 | 1973-08-18 |
-
1974
- 1974-02-20 JP JP2028074A patent/JPS5346449B2/ja not_active Expired
-
1975
- 1975-02-19 FR FR7505155A patent/FR2261552A1/fr active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4858746A (https=) * | 1971-11-24 | 1973-08-17 | ||
| JPS4865226U (https=) * | 1971-11-24 | 1973-08-18 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2261552A1 (en) | 1975-09-12 |
| FR2261552B1 (https=) | 1977-07-08 |
| JPS5346449B2 (https=) | 1978-12-14 |