Patent US3549277A successfully refreshed from Google Patents.
US3549277A
Expired / Lapsed
US
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Electric motor-driven rotary fuel pump with wet carbon bearing
Assignee: Delaval Turbine California Inc
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Filing: 1969-03-17
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Granted: 1970-12-22
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Expires: 1989-03-17
Abstract
No abstract record available.
Inventors
- 👤 Nicholas De Kiss
- 👤 Harris J Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:15
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/04; F04D29/046; F04D29/047; F02; F02M; F02M37/00; F02M37/04; F02M37/08; F02M37/10; F04D29/041; F04D29/0413; F04D29/08; F04D29/10; F04D29/12; F04D29/126
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) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |