US2540755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel injection system and apparatus
Assignee: UNITED AIRERAFT Corp
•
Filing: 1947-06-25
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Granted: 1951-02-06
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Expires: 1967-06-25
Abstract
No abstract record available.
Inventors
- 👤 Carl H Nystrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:34
CPC Classifications
F; F02; F02M; F02M59/00; F02M59/44; F02M47/00; F02M59/02; F02M59/20; F02M59/24; F02M59/26; F02M59/28; F02M61/00; F02M61/04; F02M61/10; F02M2700/00; F02M2700/07; F02M2700/074; F02M2700/13; F02M2700/1317; F02M2700/1388
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1289716A
Cited
US1966694A
Cited
US1999330A
Cited
US2223756A
Cited
US2192387A
Cited
US2322356A
Cited
US2357870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |