Patent US2987056A successfully refreshed from Google Patents.
US2987056A
Expired / Lapsed
US
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Governor operated fuel control systems
Assignee: Napier Turbochargers Ltd
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Filing: 1959-03-27
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Granted: 1961-06-06
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Expires: 1979-03-27
Abstract
No abstract record available.
Inventors
- 👤 Adrian L Catford
- 👤 Thomas A H Lancashire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:22
CPC Classifications
F; F02; F02D; F02D29/00; F02D2700/00; F02D2700/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2602654A
Cited
US2715892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |