FR573131A - - Google Patents
Info
- Publication number
- FR573131A FR573131A FR573131DA FR573131A FR 573131 A FR573131 A FR 573131A FR 573131D A FR573131D A FR 573131DA FR 573131 A FR573131 A FR 573131A
- 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
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/68—Record carriers
- G11B3/70—Record carriers characterised by the selection of material or structure; Processes or apparatus specially adapted for manufacturing record carriers
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR573131A true FR573131A (forum.php) | 1924-06-18 |
Family
ID=1539285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR573131D Expired FR573131A (forum.php) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR573131A (forum.php) |
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0
- FR FR573131D patent/FR573131A/fr not_active Expired