US8055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved apparatus for rolling tapered metallic rods
Assignee: —
•
Filing: —
•
Granted: 1851-04-22
•
Expires: 1868-04-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:37
CPC Classifications
B; B21; B21B; B21B37/00; B21B37/16; B21B37/24; B21B31/00; B21B31/16; B21B31/20; B21B31/22; B21B31/24; B21B31/32; B21B1/00; B21B1/16; B21B27/00; B21B27/02
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) | 1854-04-21 | 1854-10-21 | 1855-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1858-04-21 | 1858-10-21 | 1859-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1862-04-21 | 1862-10-21 | 1863-04-22 | $7700.00 | Window Closed / Lapsed |