US2611242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal-combustion engine with regenerator
Assignee: Rover Co Ltd
•
Filing: 1948-01-13
•
Granted: 1952-09-23
•
Expires: 1968-01-13
Abstract
No abstract record available.
Inventors
- 👤 Bell Francis Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:09
CPC Classifications
F; F02; F02C; F02C3/00; F02C3/04; F02C3/08; F02C7/00; F02C7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US911825A
Cited
US853124A
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US960160A
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US1255852A
Cited
US1726104A
Cited
US2162956A
Cited
US2375006A
Cited
US2358301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |