Patent US38869A successfully refreshed from Google Patents.
US38869A
Expired / Lapsed
US
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Improvement in the construction of rolls tor rolling metal
Assignee: —
•
Filing: —
•
Granted: 1863-06-09
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Expires: 1880-06-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:47
CPC Classifications
B; B21; B21B; B21B27/00; B21B27/02; B21B27/03; B21B27/035; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49544; Y10T29/4956; Y10T29/49563
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) | 1866-06-08 | 1866-12-08 | 1867-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1870-06-08 | 1870-12-08 | 1871-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1874-06-08 | 1874-12-08 | 1875-06-09 | $7700.00 | Window Closed / Lapsed |