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US2951334A
Expired / Lapsed
US
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Thermo-dynamic reciprocating apparatus
Assignee: US Philips Corp
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Filing: 1957-10-03
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Granted: 1960-09-06
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Expires: 1977-10-03
Abstract
No abstract record available.
Inventors
- 👤 Meijer Roelf Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:40
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G2243/00; F02G2243/02; F02G2270/00; F02G2270/42; F02G2270/425
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) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |