US2675828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic pilot controlled valve system for main and auxiliary fuel lines
Assignee: United Aircraft Products Inc
•
Filing: 1948-09-18
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Granted: 1954-04-20
•
Expires: 1968-09-18
Abstract
No abstract record available.
Inventors
- 👤 Harry T Booth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:37
CPC Classifications
F; F02; F02D; F02D33/00; F02D33/003; B; B64; B64D; B64D37/00; B64D37/02; F02M; F02M37/00; F02M37/0011; F02M37/0023; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/877; Y10T137/87829; Y10T137/87837; Y10T137/87861
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US537584A
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US2263913A
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US2279571A
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US2316445A
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US2394431A
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US2379181A
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US2447820A
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US2479359A
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US2375411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |