US2684053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-speed internal-combustion reciprocating engine
Assignee: Individual
•
Filing: 1951-11-13
•
Granted: 1954-07-20
•
Expires: 1971-11-13
Abstract
No abstract record available.
Inventors
- 👤 Perdelli Ferdinando
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:55
CPC Classifications
F; F01; F01B; F01B7/00; F01B7/02; F01B7/04; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18176; Y10T74/21; Y10T74/2186
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US42527A
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US334039A
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US578112A
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GB190726514A
Cited
US1378875A
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US1505976A
Cited
US1616137A
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US1719537A
Cited
GB394342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |