Patent US3720368A successfully refreshed from Google Patents.
US3720368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuge with blood sample holding means
Assignee: Roche Diagnostics Corp
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Filing: 1971-07-15
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Granted: 1973-03-13
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Expires: 1991-07-15
Abstract
Abstract A CENTRIFUGE WITH A ROTOR ADAPTED TO SIMULTANEOUSLY HOLD AND CENTRIFUGE A PLURALITY OF BLOOD SEPARATION TUBES AND HEMATOCRIT TUBES, ALSO PROVIDED WITH SPEED CONTROL OVER A WIDE RANGE, FROM 4,000 R.P.M. FOR URINE SPECIMEN CENTRIFUGATION, UP TO 10,000 R.P.M. FOR RAPID HEMATOCRIT PREPARATION, ALSO PROVIDED WITH A PROTECTIVE LID LATCH CORRELATED WITH A COMBINED BRAKE ACTUATOR AND CIRCUITOPENING SWITCH TO CUT OFF POWER WHEN THE LID IS LIFTED.
Inventors
- 👤 D Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:33
CPC Classifications
B; B04; B04B; B04B5/00; B04B5/04; B04B5/0407; B04B5/0414
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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |