FR985742A - - Google Patents
Info
- Publication number
- FR985742A FR985742A FR985742DA FR985742A FR 985742 A FR985742 A FR 985742A FR 985742D A FR985742D A FR 985742DA FR 985742 A FR985742 A FR 985742A
- 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 |
|---|---|
| FR985742A true FR985742A (fi) | 1951-07-23 |
Family
ID=1566925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR985742D Expired FR985742A (fi) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR985742A (fi) |
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0
- FR FR985742D patent/FR985742A/fr not_active Expired