FR447739A - Improvements to phonographs, gramophones, etc. - Google Patents
Improvements to phonographs, gramophones, etc.Info
- Publication number
- FR447739A FR447739A FR447739DA FR447739A FR 447739 A FR447739 A FR 447739A FR 447739D A FR447739D A FR 447739DA FR 447739 A FR447739 A FR 447739A
- Authority
- FR
- France
- Prior art keywords
- gramophones
- 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
- G11B3/68—Record carriers
- G11B3/70—Record carriers characterised by the selection of material or structure; Processes or apparatus specially adapted for manufacturing record carriers
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR447739T | 1911-11-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR447739A true FR447739A (en) | 1913-01-13 |
Family
ID=1488404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR447739D Expired FR447739A (en) | 1911-11-04 | 1911-11-04 | Improvements to phonographs, gramophones, etc. |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR447739A (en) |
-
1911
- 1911-11-04 FR FR447739D patent/FR447739A/en not_active Expired
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