US2454006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal-combustion rotary motor
Assignee: Individual
•
Filing: 1945-06-04
•
Granted: 1948-11-16
•
Expires: 1965-06-04
Abstract
No abstract record available.
Inventors
- 👤 Carl E Plummer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:50
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/30; F01C1/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US804162A
Cited
US1302504A
Cited
US1595496A
Cited
US2124542A
Cited
US2179401A
Cited
US2182719A
Cited
US2228184A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-16 | 1952-05-17 | 1952-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-16 | 1956-05-17 | 1956-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-16 | 1960-05-17 | 1960-11-16 | $7700.00 | Window Closed / Lapsed |