US2962009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-stroke internal combustion engines
Assignee: Individual
•
Filing: 1958-08-04
•
Granted: 1960-11-29
•
Expires: 1978-08-04
Abstract
No abstract record available.
Inventors
- 👤 Buchi Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:40
CPC Classifications
F; F02; F02B; F02B25/00; F02B2720/00; F02B2720/23; F02B2720/231
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1342483A
Cited
US987801A
Cited
FR489765A
Cited
US1438877A
Cited
US1849170A
Cited
US2151698A
Cited
US2126609A
Cited
US2347465A
Cited
US2431563A
Cited
US2534346A
Cited
US2624171A
Cited
GB699846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |