Patent US2763254A successfully refreshed from Google Patents.
US2763254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engines
Assignee: Individual
•
Filing: 1954-05-04
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Granted: 1956-09-18
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Expires: 1974-05-04
Abstract
No abstract record available.
Inventors
- 👤 Harry A Klug
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:22
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/24; F02F1/242; F02B; F02B23/00; F02B23/08; F02B2023/085; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |