US2736776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recorder head assembly
Assignee: IIT Research Institute
•
Filing: 1951-06-02
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Granted: 1956-02-28
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Expires: 1971-06-02
Abstract
No abstract record available.
Inventors
- 👤 Camras Marvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:58
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/602; G11B5/00; G11B5/02; G11B5/027; G11B5/03; G11B5/10; G11B5/127; G11B5/265; G11B5/48; G11B5/488; G11B5/4893; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49021; Y10T29/49032; Y10T29/49036; Y10T29/49041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2213246A
Cited
US2419195A
Cited
US2532803A
Cited
US2497654A
Cited
US2523576A
Cited
US2532917A
Cited
US2538892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |