Patent US3025840A successfully refreshed from Google Patents.
US3025840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carburetion engine with variablevolume combustion chamber
Assignee: Individual
•
Filing: 1958-04-01
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Granted: 1962-03-20
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Expires: 1978-04-01
Abstract
No abstract record available.
Inventors
- 👤 Casini Carlo Romano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:26
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/36; F02B75/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US741179A
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US817905A
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US936409A
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US1437929A
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US1489004A
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US1560492A
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US1825163A
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US1828976A
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US2006498A
Cited
US2104802A
Cited
DE741563C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |