FR947942A - Improvements to phonographs - Google Patents
Improvements to phonographsInfo
- Publication number
- FR947942A FR947942A FR947942DA FR947942A FR 947942 A FR947942 A FR 947942A FR 947942D A FR947942D A FR 947942DA FR 947942 A FR947942 A FR 947942A
- Authority
- FR
- France
- Prior art keywords
- phonographs
- 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
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/02—Arrangements of heads
- G11B3/10—Arranging, supporting, or driving of heads or of transducers relatively to record carriers
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US947942XA | 1941-12-24 | 1941-12-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR947942A true FR947942A (en) | 1949-07-18 |
Family
ID=22247208
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR947942D Expired FR947942A (en) | 1941-12-24 | 1947-06-16 | Improvements to phonographs |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR947942A (en) |
-
1947
- 1947-06-16 FR FR947942D patent/FR947942A/en not_active Expired
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