Patent US3540474A successfully refreshed from Google Patents.
US3540474A
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Rapid mixer
Assignee: Beckman Coulter Inc
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Filing: 1968-04-01
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Granted: 1970-11-17
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Expires: 1988-04-01
Abstract
No abstract record available.
Inventors
- 👤 Thomas D Sharples
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:14
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/20; B01F25/23; B01F25/40; B01F25/44; B01F25/441; B01F25/4412; B01F25/4413; B01F25/4416; B01F25/44161; B01F25/44165; B01F25/44167; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8359; Y10T137/8593; Y10T137/87571; Y10T137/87652
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) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |