US3417329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toroidal conductivity measuring system
Assignee: Beckman Coulter Inc
•
Filing: 1965-06-25
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Granted: 1968-12-17
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Expires: 1985-06-25
Abstract
No abstract record available.
Inventors
- 👤 David M Landis
- 👤 Gerald A Rost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:20
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/023; G01N27/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2709785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |