FR570774A - - Google Patents
Info
- Publication number
- FR570774A FR570774A FR570774DA FR570774A FR 570774 A FR570774 A FR 570774A FR 570774D A FR570774D A FR 570774DA FR 570774 A FR570774 A FR 570774A
- 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
- G11B3/44—Styli, e.g. sapphire, diamond
- G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR570774A true FR570774A (fr) | 1924-05-07 |
Family
ID=1539230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR570774D Expired FR570774A (fr) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR570774A (fr) |
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0
- FR FR570774D patent/FR570774A/fr not_active Expired