US2892041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic transducing apparatus
Assignee: Unisys Corp
•
Filing: 1954-10-11
•
Granted: 1959-06-23
•
Expires: 1974-10-11
Abstract
No abstract record available.
Inventors
- 👤 Sidney M Rubens
- 👤 Arndt B Bergh
- 👤 Paul E Oberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:06
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/10; G11B5/11; G11B5/127; G11B5/33; G11B5/335
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2531642A
Cited
US2536260A
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US2649568A
Cited
US2608621A
Cited
US2768243A
Cited
US2700703A
Cited
US2769036A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-22 | 1962-12-22 | 1963-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-22 | 1966-12-22 | 1967-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-22 | 1970-12-22 | 1971-06-23 | $7700.00 | Window Closed / Lapsed |