FR545276A - - Google Patents
Info
- Publication number
- FR545276A FR545276A FR545276DA FR545276A FR 545276 A FR545276 A FR 545276A FR 545276D A FR545276D A FR 545276DA FR 545276 A FR545276 A FR 545276A
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR545276A true FR545276A (online.php) | 1922-10-09 |
Family
ID=1537766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR545276D Expired FR545276A (online.php) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR545276A (online.php) |
-
0
- FR FR545276D patent/FR545276A/fr not_active Expired