FR7497E - Microphonograph device - Google Patents
Microphonograph deviceInfo
- Publication number
- FR7497E FR7497E FR7497DA FR7497E FR 7497 E FR7497 E FR 7497E FR 7497D A FR7497D A FR 7497DA FR 7497 E FR7497 E FR 7497E
- Authority
- FR
- France
- Prior art keywords
- microphonograph
- microphonograph device
- 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
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR364162T | 1906-03-12 | ||
FR7497T | 1907-03-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR7497E true FR7497E (en) | 1907-08-09 |
Family
ID=1350292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7497D Expired FR7497E (en) | 1906-03-12 | 1907-03-18 | Microphonograph device |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR7497E (en) |
-
1907
- 1907-03-18 FR FR7497D patent/FR7497E/en not_active Expired
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