US2658952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recording and reproducing device
Assignee: Clevite Corp
•
Filing: 1949-05-10
•
Granted: 1953-11-10
•
Expires: 1969-05-10
Abstract
No abstract record available.
Inventors
- 👤 Harsant Henry James
- 👤 Deucher Theodore Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:54
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/36; G11B15/00; G11B15/02; G11B15/023; G11B15/10; G11B15/18; G11B15/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2314834A
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US2365691A
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US2469706A
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US2501573A
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US2464220A
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US2500903A
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US2419476A
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US2467507A
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US2535486A
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US2540299A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |