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US2537694A
Expired / Lapsed
US
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Internal-combustion engine
Assignee: THERMAL LIQUIDS Inc
•
Filing: 1946-06-22
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Granted: 1951-01-09
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Expires: 1966-06-22
Abstract
No abstract record available.
Inventors
- 👤 Orion O Oaks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:26
CPC Classifications
F; F01; F01P; F01P11/00; F01P11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1116169A
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US1311528A
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US1456072A
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US2070588A
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US1985198A
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GB497056A
Cited
US2244641A
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US2353966A
Cited
US2335012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |