US27922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam-boiler
Assignee: —
•
Filing: —
•
Granted: 1860-04-17
•
Expires: 1877-04-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:33
CPC Classifications
F; F23; F23L; F23L1/00; F23M; F23M5/00; F23M5/08; F23M5/085; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/12; Y10S430/128
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) | 1863-04-17 | 1863-10-17 | 1864-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1867-04-17 | 1867-10-17 | 1868-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1871-04-17 | 1871-10-17 | 1872-04-17 | $7700.00 | Window Closed / Lapsed |