FR687509A - - Google Patents
Info
- Publication number
- FR687509A FR687509A FR687509DA FR687509A FR 687509 A FR687509 A FR 687509A FR 687509D A FR687509D A FR 687509DA FR 687509 A FR687509 A FR 687509A
- 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
- G03B31/00—Associated working of cameras or projectors with sound-recording or sound-reproducing means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR687509A true FR687509A (xx) | 1930-09-11 |
Family
ID=1543929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR687509D Expired FR687509A (xx) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR687509A (xx) |
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0
- FR FR687509D patent/FR687509A/fr not_active Expired