US2855911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cooled two stroke cycle diesel engine
Assignee: Rockwell GmbH
•
Filing: 1955-12-16
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Granted: 1958-10-14
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Expires: 1975-12-16
Abstract
No abstract record available.
Inventors
- 👤 Heinrich C Christiansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:48
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/02; F02F1/04; F02F1/06; F02F1/065; F01; F01P; F01P5/00; F01P5/02; F01P5/06; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; F02B3/00; F02B3/06; F02F1/24; F02F2001/249
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US785687A
Cited
US972409A
Cited
US1110332A
Cited
US2670726A
Cited
FR1066629A
Cited
FR1067382A
Cited
US2737171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |