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US2660421A
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US
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Speed governor
Assignee: Woodward Inc
•
Filing: 1949-05-13
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Granted: 1953-11-24
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Expires: 1969-05-13
Abstract
No abstract record available.
Inventors
- 👤 George E Sorensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:44
CPC Classifications
G; G05; G05D; G05D13/00; G05D13/02; G05D13/06; Y; Y10; Y10T; Y10T137/00; Y10T137/0971; Y10T137/108; Y10T137/1098; Y10T137/1135
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US713497A
Cited
US1087818A
Cited
US1240739A
Cited
US1996104A
Cited
US2229681A
Cited
US2307506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |