Patent US3279443A successfully refreshed from Google Patents.
US3279443A
Expired / Lapsed
US
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Cylinder liners
Assignee: Morganite Carbon Ltd
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Filing: 1964-11-02
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Granted: 1966-10-18
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Expires: 1984-11-02
Abstract
No abstract record available.
Inventors
- 👤 Campbell John Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:42
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/02; F02F1/10; F02F1/16; F05; F05C; F05C2201/00; F05C2201/04; F05C2201/0469; F05C2201/0475; F05C2203/00; F05C2203/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
AN INTERNAL COMBUSTION ENGINE HAVING A CYLINDER LINER MADE OF GRAPHITE WHEREIN THE GRAPHITE HAS BEEN RENDERED IMPERMEABLE BY IMPREGNATION.
Claim 2
Dependent Claim
20 words
AN INTERNAL COMBUSTION ENGINE HAVING A CYLINDER LINER MADE OF GRAPHITE WHEREIN THE GRAPHITE HAS BEEN RENDERED IMPERMEABLE BY IMPREGNATION.
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |