Patent US109783A successfully refreshed from Google Patents.
US109783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in steam-engines
Assignee: —
•
Filing: —
•
Granted: 1870-11-29
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Expires: 1887-11-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:14
CPC Classifications
F; F01; F01K; F01K11/00; F01K11/04
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) | 1873-11-28 | 1874-05-30 | 1874-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1877-11-28 | 1878-05-30 | 1878-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1881-11-28 | 1882-05-30 | 1882-11-29 | $7700.00 | Window Closed / Lapsed |