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Patent US936563A successfully refreshed from Google Patents.
US936563A
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Apparatus for concentrating.
Assignee: AMERICAN REDUCTION Co
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Filing: 1906-04-23
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Granted: 1909-10-12
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Expires: 1926-04-23
Abstract
No abstract record available.
Inventors
- 👤 George F Rendall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:49
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/62; B03B5/623
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) | 1912-10-11 | 1913-04-12 | 1913-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-10-11 | 1917-04-12 | 1917-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-10-11 | 1921-04-12 | 1921-10-12 | $7700.00 | Window Closed / Lapsed |