FR741860A - - Google Patents
Info
- Publication number
- FR741860A FR741860A FR741860DA FR741860A FR 741860 A FR741860 A FR 741860A FR 741860D A FR741860D A FR 741860DA FR 741860 A FR741860 A FR 741860A
- 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 |
|---|---|
| FR741860A true FR741860A (fr) | 1933-02-22 |
Family
ID=1546343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR741860D Expired FR741860A (fr) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR741860A (fr) |
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0
- FR FR741860D patent/FR741860A/fr not_active Expired