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US2424723A
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Internal-combustion engine
Assignee: Phillips Petroleum Co
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Filing: 1945-11-13
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Granted: 1947-07-29
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Expires: 1965-11-13
Abstract
No abstract record available.
Inventors
- 👤 Carman C Tate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:00
CPC Classifications
F; F02; F02M; F02M69/00; F02B; F02B2720/00; F02B2720/15; F02B2720/153
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1304550A
Cited
US1377535A
Cited
US1099445A
Cited
US1138581A
Cited
US1413213A
Cited
US1371397A
Cited
US2134786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-28 | 1951-01-27 | 1951-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-28 | 1955-01-27 | 1955-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-28 | 1959-01-27 | 1959-07-29 | $7700.00 | Window Closed / Lapsed |