US2669245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control device
Assignee: Power Jets Research and Development Ltd
•
Filing: 1945-06-06
•
Granted: 1954-02-16
•
Expires: 1965-06-06
Abstract
No abstract record available.
Inventors
- 👤 Walker Daniel Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:50
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/14; G05D16/16; G05D16/166; F; F02; F02C; F02C9/00; F02C9/26; F02C9/263; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/2012; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7905
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US417329A
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US1367452A
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US1623431A
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US1773268A
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US1753024A
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US1998362A
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US2189475A
Cited
GB499606A
Cited
US2396618A
Cited
US2173838A
Cited
US2283296A
Cited
US2277491A
Cited
US2408836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |