US2511441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary internal-combustion engine
Assignee: Cie Normande D Etudes Pour L A
•
Filing: 1947-07-16
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Granted: 1950-06-13
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Expires: 1967-07-16
Abstract
No abstract record available.
Inventors
- 👤 Loubiere Casimir Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:26
CPC Classifications
F; F01; F01C; F01C11/00; F01C11/002; F01C11/004; F01C1/00; F01C1/30; F01C1/34; F01C1/344; F01C1/3441; F01C1/3442; F02; F02B; F02B2730/00; F02B2730/01; F02B2730/012; F02B53/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US51165A
Cited
US860656A
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US880009A
Cited
US969957A
Cited
US1192665A
Cited
US976913A
Cited
FR515446A
Cited
US1899374A
Cited
US2390169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-12 | 1953-12-12 | 1954-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-12 | 1957-12-12 | 1958-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-12 | 1961-12-12 | 1962-06-13 | $7700.00 | Window Closed / Lapsed |