Patent US49263A successfully refreshed from Google Patents.
US49263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in steam-generators
Assignee: —
•
Filing: 1865-08-08
•
Granted: 1865-08-08
•
Expires: 1885-08-08
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:33
CPC Classifications
F; F22; F22B; F22B13/00; F22B21/00; F22B21/22; F22B21/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1868-08-07 | 1869-02-06 | 1869-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1872-08-07 | 1873-02-06 | 1873-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1876-08-07 | 1877-02-06 | 1877-08-08 | $7700.00 | Window Closed / Lapsed |