FR576486A - Improvement in phonographs - Google Patents
Improvement in phonographsInfo
- Publication number
- FR576486A FR576486A FR576486DA FR576486A FR 576486 A FR576486 A FR 576486A FR 576486D A FR576486D A FR 576486DA FR 576486 A FR576486 A FR 576486A
- Authority
- FR
- France
- Prior art keywords
- phonographs
- improvement
- Prior art date
- 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
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/20—Driving; Starting; Stopping; Control thereof
- G11B19/26—Speed-changing arrangements; Reversing arrangements; Drive-transfer means therefor
- G11B19/265—Friction wheel drive
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB576486X | 1923-01-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR576486A true FR576486A (en) | 1924-08-21 |
Family
ID=10479683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR576486D Expired FR576486A (en) | 1923-01-31 | 1924-01-30 | Improvement in phonographs |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR576486A (en) |
-
1924
- 1924-01-30 FR FR576486D patent/FR576486A/en not_active Expired
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