Patent FR1274512A successfully refreshed from Google Patents.
Patent US2627112A successfully refreshed from Google Patents.
US2823686A
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US
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Turbine control
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1952-04-17
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Granted: 1958-02-18
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Expires: 1972-04-17
Abstract
No abstract record available.
Inventors
- 👤 Robert J Anderson
- 👤 Victor W Gennert
- 👤 Allen E Lepley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:26
CPC Classifications
F; F01; F01D; F01D17/00; F01D17/20; F01D17/22; F01D17/26; F01D17/10; F01D17/12; F01D17/14; F01D17/141; F01D17/145; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |