US2802460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two stroke cycle engine with compression control valve means
Assignee: Nordberg Manufacturing Co
•
Filing: 1954-03-12
•
Granted: 1957-08-13
•
Expires: 1974-03-12
Abstract
No abstract record available.
Inventors
- 👤 Paul S Shirley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:30
CPC Classifications
F; F01; F01L; F01L13/00; F01L13/0015; F01L9/00; F01L9/10; F01L9/11; F02; F02B; F02B1/00; F02B1/02; F02B1/04; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2198516A
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US2292233A
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US2346458A
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US2670595A
Cited
US2612145A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |