US663716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary engine.
Assignee: Individual
•
Filing: 1900-04-07
•
Granted: 1900-12-11
•
Expires: 1920-04-07
Abstract
No abstract record available.
Inventors
- 👤 Charles H Asling
- 👤 Albert Helms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:29
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/12; F04B1/20; F04B1/2014; F04B1/2042; F01; F01C; F01C1/00; F01C1/30; F01C1/34; F01C1/344; F01C1/3446; F01C21/00; F01C21/08; F01C21/0809; F01C21/0818; F01C21/0854; F01C21/0863; F04C; F04C2240/00; F04C2240/60; F04C2240/603
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1903-12-11 | 1904-06-11 | 1904-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-12-11 | 1908-06-11 | 1908-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-12-11 | 1912-06-11 | 1912-12-11 | $7700.00 | Window Closed / Lapsed |