Patent US3436637A successfully refreshed from Google Patents.
US3436637A
Expired / Lapsed
US
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Overspeed shutdown system for centrifuge apparatus
Assignee: Beckman Coulter Inc
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Filing: 1966-07-29
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Granted: 1969-04-01
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Expires: 1986-07-29
Abstract
No abstract record available.
Inventors
- 👤 Robert J Ehret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:37
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/56; G01P3/60; B; B04; B04B; B04B13/00; B04B13/003; H; H02; H02H; H02H7/00; H02H7/08; H02H7/093
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |