Patent US4256242A successfully refreshed from Google Patents.
Patent US4527611A successfully refreshed from Google Patents.
Patent US3812394A successfully refreshed from Google Patents.
Patent US2122028A successfully refreshed from Google Patents.
Patent US5320797B1 successfully refreshed from Google Patents.
US31560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement of carriage-springs
Assignee: —
•
Filing: —
•
Granted: 1861-02-26
•
Expires: 1878-02-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:46
CPC Classifications
B; B60; B60G; B60G11/00; B60G11/02
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) | 1864-02-26 | 1864-08-27 | 1865-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1868-02-26 | 1868-08-27 | 1869-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1872-02-26 | 1872-08-27 | 1873-02-26 | $7700.00 | Window Closed / Lapsed |