US962052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous centrifugal machine.
Assignee: Individual
•
Filing: 1909-05-01
•
Granted: 1910-06-21
•
Expires: 1929-05-01
Abstract
No abstract record available.
Inventors
- 👤 Fred H Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:30
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/70; B01D33/76; B01D33/06; B01D33/11
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) | 1913-06-20 | 1913-12-20 | 1914-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-06-20 | 1917-12-20 | 1918-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-06-20 | 1921-12-20 | 1922-06-21 | $7700.00 | Window Closed / Lapsed |