Patent US2828601A successfully refreshed from Google Patents.
US2828601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot-gas reciprocating engine
Assignee: US Philips Corp
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Filing: 1953-03-31
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Granted: 1958-04-01
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Expires: 1973-03-31
Abstract
No abstract record available.
Inventors
- 👤 Meijer Hugo Hubertus Mettivier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:46
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G2244/00
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) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |