Patent US115293A successfully refreshed from Google Patents.
US115293A
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US
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Improvement in polishing ores to aid in amalgamating the precious metals
Assignee: —
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Filing: —
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Granted: 1871-05-30
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Expires: 1888-05-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:34
CPC Classifications
C; C09; C09G; C09G1/00; C09G1/02; C04; C04B; C04B35/00; C04B35/515; C04B35/58; C04B35/583; C04B35/5831
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) | 1874-05-29 | 1874-11-28 | 1875-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1878-05-29 | 1878-11-28 | 1879-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1882-05-29 | 1882-11-28 | 1883-05-30 | $7700.00 | Window Closed / Lapsed |