Patent US3443433A successfully refreshed from Google Patents.
US3443433A
Expired / Lapsed
US
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Flowmeter
Assignee: Beckman Coulter Inc
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Filing: 1965-06-28
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Granted: 1969-05-13
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Expires: 1985-06-28
Abstract
No abstract record available.
Inventors
- 👤 Max D Liston
- 👤 Cedric H Beebe
- 👤 John T Woolhouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:55
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/66; G01F1/663; G01S; G01S1/00; G01S1/72
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) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |