Patent US2984971A successfully refreshed from Google Patents.
US2984971A
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Control system
Assignee: Aerojet Rocketdyne Inc
•
Filing: 1957-09-16
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Granted: 1961-05-23
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Expires: 1977-09-16
Abstract
No abstract record available.
Inventors
- 👤 Howard E Corbitt
- 👤 Robert W Cunningham
- 👤 Jr Ralph M Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:57
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/44; F02K9/56; F02K9/566; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7761
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2199910A
Cited
US2427750A
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US2477507A
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US2466846A
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US2583328A
Cited
US2641105A
Cited
US2635197A
Cited
US2767362A
Cited
US2902824A
Cited
US2914710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |