Patent US31272A successfully refreshed from Google Patents.
US31272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam-engine
Assignee: —
•
Filing: —
•
Granted: 1861-01-29
•
Expires: 1878-01-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:47
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/22; H01H3/30; H01H3/3031; G; G05; G05G; G05G17/00; Y; Y10; Y10T; Y10T74/00; Y10T74/11
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) | 1864-01-29 | 1864-07-30 | 1865-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1868-01-29 | 1868-07-30 | 1869-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1872-01-29 | 1872-07-30 | 1873-01-29 | $7700.00 | Window Closed / Lapsed |