Patent US2963854A successfully refreshed from Google Patents.
US2963854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot-gas reciprocating engine
Assignee: US Philips Corp
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Filing: 1959-03-09
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Granted: 1960-12-13
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Expires: 1979-03-09
Abstract
No abstract record available.
Inventors
- 👤 Meijer Roelf Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:38
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G2243/00; F02G2243/02; F02G2270/00; F02G2270/42; F02G2270/425; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18208; Y10T74/21; Y10T74/2142
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) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |