Patent US2990825A successfully refreshed from Google Patents.
US2990825A
Expired / Lapsed
US
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Speed regulator systems or mechanisms
Assignee: Curtiss Wright Corp
•
Filing: 1959-02-24
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Granted: 1961-07-04
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Expires: 1979-02-24
Abstract
No abstract record available.
Inventors
- 👤 John L Fuller
- 👤 William A Wickline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:59
CPC Classifications
F; F01; F01L; F01L1/00; F01L2710/00; F01L2710/006; Y; Y10; Y10T; Y10T137/00; Y10T137/2278
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2174062A
Cited
US2260576A
Cited
US2736304A
Cited
US2737165A
Cited
US2816617A
Cited
US2887998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |