Patent US2776649A successfully refreshed from Google Patents.
US2776649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two cycle fuel injection, opposed piston, thrust plate internal combustion engine
Assignee: Individual
•
Filing: 1953-05-13
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Granted: 1957-01-08
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Expires: 1973-05-13
Abstract
No abstract record available.
Inventors
- 👤 Merrell R Fenske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:44
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/28; F02B75/282; F02B75/26; F02B75/02; F02B2075/022; F02B2075/025; F02B2275/00; F02B2275/14; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1604474A
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US1779032A
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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) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |