Patent US3044454A successfully refreshed from Google Patents.
US3044454A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion chambers of compression ignition internal combustion engines
Assignee: Rover Co Ltd
•
Filing: 1960-04-04
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Granted: 1962-07-17
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Expires: 1980-04-04
Abstract
No abstract record available.
Inventors
- 👤 Sutton Douglas Leslie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:56
CPC Classifications
F; F02; F02B; F02B19/00; F02B19/08; F02B2019/006; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1662989A
Cited
US2065025A
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DE678446C
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DE749282C
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US2741229A
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US2865346A
Cited
US2873727A
Cited
US2979043A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-16 | 1966-01-15 | 1966-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-16 | 1970-01-15 | 1970-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-16 | 1974-01-15 | 1974-07-17 | $7700.00 | Window Closed / Lapsed |