Patent US388385A successfully refreshed from Google Patents.
Patent US56807A successfully refreshed from Google Patents.
US56807A
Expired / Lapsed
US
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Improved method of compressing, condensing, and extending metals
Assignee: —
•
Filing: —
•
Granted: 1866-07-31
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Expires: 1883-07-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:50
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/14
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) | 1869-07-30 | 1870-01-29 | 1870-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1873-07-30 | 1874-01-29 | 1874-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1877-07-30 | 1878-01-29 | 1878-07-31 | $7700.00 | Window Closed / Lapsed |