US2463155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary engine
Assignee: Individual
•
Filing: 1944-04-10
•
Granted: 1949-03-01
•
Expires: 1964-04-10
Abstract
No abstract record available.
Inventors
- 👤 Bailey P Dawes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:36
CPC Classifications
F; F01; F01C; F01C20/00; F01C20/10; F01C1/00; F01C1/30; F01C1/34; F01C1/344; F01C1/3441; F01C1/3442; F01C21/00; F01C21/08; F01C21/0809; F01C21/0818; F01C21/0827; F01C21/0836; F01C21/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US152042A
Cited
US280027A
Cited
US604995A
Cited
DE458384C
Cited
US900013A
Cited
US978743A
Cited
US1221333A
Cited
GB149659A
Cited
FR538710A
Cited
GB282263A
Cited
US2274232A
Cited
US2382259A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-29 | 1952-08-30 | 1953-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-29 | 1956-08-30 | 1957-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-29 | 1960-08-30 | 1961-03-01 | $7700.00 | Window Closed / Lapsed |