Patent US2433111A successfully refreshed from Google Patents.
US2433111A
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Two-cycle gas engine
Assignee: Cooper Bessemer Corp
•
Filing: 1945-06-20
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Granted: 1947-12-23
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Expires: 1965-06-20
Abstract
No abstract record available.
Inventors
- 👤 Hewitt A Gehres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:47
CPC Classifications
F; F02; F02M; F02M69/00; F02B; F02B2720/00; F02B2720/15; Y; Y10; Y10S; Y10S123/00; Y10S123/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US536090A
Cited
GB190415625A
Cited
US1102045A
Cited
US1140394A
Cited
US1528986A
Cited
US1541207A
Cited
US1721320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-22 | 1951-06-23 | 1951-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-22 | 1955-06-23 | 1955-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-22 | 1959-06-23 | 1959-12-23 | $7700.00 | Window Closed / Lapsed |