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US1064184A
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US
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Centrifugal concentrator.
Assignee: Individual
•
Filing: 1911-09-16
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Granted: 1913-06-10
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Expires: 1931-09-16
Abstract
No abstract record available.
Inventors
- 👤 Paul Oscar Wels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:53
CPC Classifications
B; B04; B04B; B04B1/00; B04B1/10; B04B1/14; B04B1/16; B04B1/18
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) | 1916-06-09 | 1916-12-09 | 1917-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1920-06-09 | 1920-12-09 | 1921-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1924-06-09 | 1924-12-09 | 1925-06-10 | $7700.00 | Window Closed / Lapsed |