US2985830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scanner element for particle analyzers
Assignee: Coulter Electronics Inc
•
Filing: 1958-12-29
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Granted: 1961-05-23
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Expires: 1978-12-29
Abstract
No abstract record available.
Inventors
- 👤 Wallace H Coulter
- 👤 Robert H Berg
- 👤 Fred L Heuschkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:18
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/10; G01N15/1031; G01N15/12; G01N15/13; Y; Y10; Y10S; Y10S65/00; Y10S65/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2584427A
Cited
US2656508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |