FR945905A - Improvements to sound recording - Google Patents
Improvements to sound recordingInfo
- Publication number
- FR945905A FR945905A FR945905DA FR945905A FR 945905 A FR945905 A FR 945905A FR 945905D A FR945905D A FR 945905DA FR 945905 A FR945905 A FR 945905A
- Authority
- FR
- France
- Prior art keywords
- sound recording
- sound
- recording
- 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
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/38—Visual features other than those contained in record tracks or represented by sprocket holes the visual signals being auxiliary signals
- G11B23/40—Identifying or analogous means applied to or incorporated in the record carrier and not intended for visual display simultaneously with the playing-back of the record carrier, e.g. label, leader, photograph
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US945905XA | 1938-12-15 | 1938-12-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR945905A true FR945905A (en) | 1949-05-18 |
Family
ID=22246031
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR945905D Expired FR945905A (en) | 1938-12-15 | 1947-04-28 | Improvements to sound recording |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR945905A (en) |
-
1947
- 1947-04-28 FR FR945905D patent/FR945905A/en not_active Expired
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