US2900968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine
Assignee: Worthington Corp
•
Filing: 1958-03-25
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Granted: 1959-08-25
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Expires: 1978-03-25
Abstract
No abstract record available.
Inventors
- 👤 William M Kauffmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:11
CPC Classifications
F; F02; F02M; F02M69/00; F02B; F02B2720/00; F02B2720/15; F02B2720/153
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE444722C
Cited
US2306733A
Cited
US2362838A
Cited
US2729205A
Cited
US2832324A
Cited
US2764963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |