FR889499A - - Google Patents
Info
- Publication number
- FR889499A FR889499A FR889499DA FR889499A FR 889499 A FR889499 A FR 889499A FR 889499D A FR889499D A FR 889499DA FR 889499 A FR889499 A FR 889499A
- Authority
- FR
- France
- 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.)
- Expired
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
- G03B21/10—Projectors with built-in or built-on screen
- G03B21/11—Projectors with built-in or built-on screen for microfilm reading
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR889499A true FR889499A (cs) | 1944-01-11 |
Family
ID=1556588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR889499D Expired FR889499A (cs) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR889499A (cs) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3229570A (en) * | 1960-07-21 | 1966-01-18 | Richard T Erban | Projection microscope |
-
0
- FR FR889499D patent/FR889499A/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3229570A (en) * | 1960-07-21 | 1966-01-18 | Richard T Erban | Projection microscope |