FR778553A - - Google Patents
Info
- Publication number
- FR778553A FR778553A FR778553DA FR778553A FR 778553 A FR778553 A FR 778553A FR 778553D A FR778553D A FR 778553DA FR 778553 A FR778553 A FR 778553A
- 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 |
|---|---|
| FR778553A true FR778553A (xx) | 1935-03-15 |
Family
ID=1552288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR778553D Expired FR778553A (xx) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR778553A (xx) |
-
0
- FR FR778553D patent/FR778553A/fr not_active Expired