Patent US3696152A successfully refreshed from Google Patents.
US27148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved rotary steam-engine
Assignee: —
•
Filing: —
•
Granted: 1860-02-14
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Expires: 1877-02-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:11
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/08; F01C21/0809; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3446
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) | 1863-02-13 | 1863-08-15 | 1864-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1867-02-13 | 1867-08-15 | 1868-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1871-02-13 | 1871-08-15 | 1872-02-14 | $7700.00 | Window Closed / Lapsed |