Patent FR433925A successfully refreshed from Google Patents.
US47082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in the manufacture of blacking
Assignee: —
•
Filing: —
•
Granted: 1865-04-04
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Expires: 1882-04-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:45
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/22; C11D7/40; C11D7/44
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) | 1868-04-03 | 1868-10-03 | 1869-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1872-04-03 | 1872-10-03 | 1873-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1876-04-03 | 1876-10-03 | 1877-04-04 | $7700.00 | Window Closed / Lapsed |