US2880388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-mechanical resolvers
Assignee: Ambac International Corp
•
Filing: 1956-02-27
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Granted: 1959-03-31
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Expires: 1976-02-27
Abstract
No abstract record available.
Inventors
- 👤 Charles D Bock
- 👤 Davis Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:58
CPC Classifications
G; G08; G08C; G08C19/00; G08C19/38; G08C19/46; G05; G05D; G05D3/00; G05D3/12; G05D3/121; G05D3/122; G06; G06G; G06G7/00; G06G7/12; G06G7/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |