Patent US2805654A successfully refreshed from Google Patents.
US2805654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Opposed piston two cycle engine
Assignee: Individual
•
Filing: 1950-10-06
•
Granted: 1957-09-10
•
Expires: 1970-10-06
Abstract
No abstract record available.
Inventors
- 👤 Harold M Jacklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:48
CPC Classifications
F; F01; F01B; F01B7/00; F01B7/02; F01B7/14; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; F02B75/28
Claims Analysis
Total Claims: 0
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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) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |