US693348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary engine.
Assignee: GUILFORD S WOOD
•
Filing: 1897-11-15
•
Granted: 1902-02-11
•
Expires: 1917-11-15
Abstract
No abstract record available.
Inventors
- 👤 David M Dearing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:51
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3441; F04C2/3443
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) | 1905-02-10 | 1905-08-12 | 1906-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1909-02-10 | 1909-08-12 | 1910-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1913-02-10 | 1913-08-12 | 1914-02-11 | $7700.00 | Window Closed / Lapsed |