Patent US3969737A successfully refreshed from Google Patents.
Patent US899441A successfully refreshed from Google Patents.
US899441A
Expired / Lapsed
US
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Suitable apparatus for concentrating and washing minerals.
Assignee: Individual
•
Filing: 1907-01-22
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Granted: 1908-09-22
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Expires: 1927-01-22
Abstract
No abstract record available.
Inventors
- 👤 Arthur Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:37
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/10; B06B1/16; B06B1/161; B06B1/166; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18344
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) | 1911-09-22 | 1912-03-23 | 1912-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-09-22 | 1916-03-23 | 1916-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-09-22 | 1920-03-23 | 1920-09-22 | $7700.00 | Window Closed / Lapsed |