US2872671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft position indicating device
Assignee: International Business Machines Corp
•
Filing: 1956-08-09
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Granted: 1959-02-03
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Expires: 1976-08-09
Abstract
No abstract record available.
Inventors
- 👤 Charles A Walton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:19
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/22; H03M1/24; H03M1/28; H03M1/30; H03M1/308
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2502837A
Cited
US2496585A
Cited
US2548731A
Cited
US2666912A
Cited
US2719284A
Cited
US2685043A
Cited
US2766445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |