US2936110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of centrifuge operation
Assignee: Individual
•
Filing: 1945-01-31
•
Granted: 1960-05-10
•
Expires: 1965-01-31
Abstract
No abstract record available.
Inventors
- 👤 Cohen Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:14
CPC Classifications
B; B04; B04B; B04B5/00; B04B5/08; B01; B01D; B01D59/00; B01D59/20; B04B5/04; B04B5/0442
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1061656A
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US1123867A
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US1232104A
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US1700928A
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US1649118A
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US1764390A
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US2108098A
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US2291849A
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US2138467A
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US2102525A
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US2176982A
Cited
US2286157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |