US2898925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed controller for impulse turbines
Assignee: Woodward Inc
•
Filing: 1955-09-14
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Granted: 1959-08-11
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Expires: 1975-09-14
Abstract
No abstract record available.
Inventors
- 👤 Clarence L Avery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:15
CPC Classifications
F; F03; F03B; F03B15/00; F03B15/02; F03B15/20; G; G05; G05D; G05D13/00; Y; Y02; Y02E; Y02E10/00; Y02E10/20; Y10; Y10T; Y10T137/00; Y10T137/0971; Y10T137/108; Y10T137/1098; Y10T137/1171
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1035082A
Cited
US1106434A
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GB186613A
Cited
US2224638A
Cited
US2491059A
Cited
US2635847A
Cited
US2606533A
Cited
US2715892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |