US3195809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous flow centrifuge having a rotary face seal
Assignee: Beckman Coulter Inc
•
Filing: 1962-03-27
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Granted: 1965-07-20
•
Expires: 1982-03-27
Abstract
No abstract record available.
Inventors
- 👤 Edward G Pickels
- 👤 Richard C Stallman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:30
CPC Classifications
B; B04; B04B; B04B11/00; B04B11/06; B04B1/00; B04B11/02; B04B15/00; B04B15/08; B04B5/00; B04B5/04; B04B5/0442
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |