US254737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary steam-engine
Assignee: —
•
Filing: —
•
Granted: 1882-03-07
•
Expires: 1899-03-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:46
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) | 1885-03-06 | 1885-09-05 | 1886-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1889-03-06 | 1889-09-05 | 1890-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1893-03-06 | 1893-09-05 | 1894-03-07 | $7700.00 | Window Closed / Lapsed |