US794723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary engine.
Assignee: NATIONAL INVESTMENT Co
•
Filing: 1904-10-29
•
Granted: 1905-07-18
•
Expires: 1924-10-29
Abstract
No abstract record available.
Inventors
- 👤 Herbert M Lofton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:14
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/08; F01C21/0809; F01C21/0818; F01C21/0854; F01C21/0863; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3446
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1908-07-17 | 1909-01-16 | 1909-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-07-17 | 1913-01-16 | 1913-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-07-17 | 1917-01-16 | 1917-07-18 | $7700.00 | Window Closed / Lapsed |