US2659541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive mechanism for magnetic recorders
Assignee: IIT Research Institute
•
Filing: 1946-12-31
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Granted: 1953-11-17
•
Expires: 1966-12-31
Abstract
No abstract record available.
Inventors
- 👤 Camras Marvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:46
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/46; G11B15/50; G11B15/26; G11B15/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1640760A
Cited
US1240560A
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US1398680A
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US1798904A
Cited
US1789607A
Cited
US2179334A
Cited
US2215468A
Cited
US2372810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |