FR542701A - - Google Patents
Info
- Publication number
- FR542701A FR542701A FR542701DA FR542701A FR 542701 A FR542701 A FR 542701A FR 542701D A FR542701D A FR 542701DA FR 542701 A FR542701 A FR 542701A
- 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
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR542701A true FR542701A (de) | 1922-08-21 |
Family
ID=1537641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR542701D Expired FR542701A (de) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR542701A (de) |
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0
- FR FR542701D patent/FR542701A/fr not_active Expired