US2803234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid fuel injection systems for internal combustion engines
Assignee: British Internal Combustion Engine Research Institute
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Filing: 1953-11-24
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Granted: 1957-08-20
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Expires: 1973-11-24
Abstract
No abstract record available.
Inventors
- 👤 Mansfield Wilfred Percival
- 👤 Rosenfeld Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:28
CPC Classifications
F; F02; F02D; F02D1/00; F02D1/02; F02M; F02M59/00; F02M2700/00; F02M2700/13; F02M2700/1317
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |