Patent US2650471A successfully refreshed from Google Patents.
US2650471A
Expired / Lapsed
US
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Jet engine fuel control
Assignee: Lewis Engineering Co
•
Filing: 1947-07-05
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Granted: 1953-09-01
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Expires: 1967-07-05
Abstract
No abstract record available.
Inventors
- 👤 Knud J Knudsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:32
CPC Classifications
H; H02; H02P; H02P23/00; H02P23/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2025542A
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US1512805A
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US2131781A
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US2266509A
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US2231569A
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US2427687A
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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) | 1956-08-31 | 1957-03-02 | 1957-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-31 | 1961-03-02 | 1961-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-31 | 1965-03-02 | 1965-09-01 | $7700.00 | Window Closed / Lapsed |