FR766188A - Appareil phonophotographique - Google Patents
Appareil phonophotographiqueInfo
- Publication number
- FR766188A FR766188A FR766188DA FR766188A FR 766188 A FR766188 A FR 766188A FR 766188D A FR766188D A FR 766188DA FR 766188 A FR766188 A FR 766188A
- Authority
- FR
- France
- Prior art keywords
- phonophotographic
- phonophotographic 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
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US766188XA | 1933-01-03 | 1933-01-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR766188A true FR766188A (fr) | 1934-06-22 |
Family
ID=22133177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR766188D Expired FR766188A (fr) | 1933-01-03 | 1933-12-28 | Appareil phonophotographique |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR766188A (fr) |
-
1933
- 1933-12-28 FR FR766188D patent/FR766188A/fr not_active Expired
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