US2887621A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed and phase synchronizers
Assignee: Curtiss Wright Corp
•
Filing: 1956-01-31
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Granted: 1959-05-19
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Expires: 1976-01-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Arthur E Wilde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:18
CPC Classifications
H; H02; H02P; H02P5/00; H02P5/46; H02P5/52; H02P5/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2517703A
Cited
US2747141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |