Patent US2546549A successfully refreshed from Google Patents.
Patent US2937634A successfully refreshed from Google Patents.
US2937634A
Expired / Lapsed
US
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Prime mover and a fuel-power function of operation thereof
Assignee: Individual
•
Filing: 1957-12-06
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Granted: 1960-05-24
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Expires: 1977-12-06
Abstract
No abstract record available.
Inventors
- 👤 Raymond M Kelseaux
- 👤 James A Lupfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:04
CPC Classifications
F; F02; F02D; F02D19/00; F02M; F02M25/00; F02M25/022; F02M25/0221; F02M25/0224; F02M25/10; F02M25/12; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S123/00; Y10S123/12
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) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |