US2964324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound recording and reproducing apparatus
Assignee: Umicore NV SA
•
Filing: 1955-08-22
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Granted: 1960-12-13
•
Expires: 1975-08-22
Abstract
No abstract record available.
Inventors
- 👤 Eudore Brasseur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:42
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/02; G11B21/00; G11B21/02; G11B25/00; G11B25/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US462687A
Cited
US2124673A
Cited
US2127331A
Cited
US2245286A
Cited
US2546829A
Cited
FR1041699A
Cited
FR877126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |