FR743157A - - Google Patents
Info
- Publication number
- FR743157A FR743157A FR743157DA FR743157A FR 743157 A FR743157 A FR 743157A FR 743157D A FR743157D A FR 743157DA FR 743157 A FR743157 A FR 743157A
- 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
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR743157A true FR743157A (lt) | 1933-03-25 |
Family
ID=1547455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR743157D Expired FR743157A (lt) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR743157A (lt) |
-
0
- FR FR743157D patent/FR743157A/fr not_active Expired