US3435659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retention spectrum analysis apparatus
Assignee: Beckman Coulter Inc
•
Filing: 1966-06-20
•
Granted: 1969-04-01
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Expires: 1986-06-20
Abstract
No abstract record available.
Inventors
- 👤 James C Sternberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:44
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/26; G01N30/38; G01N30/46; G01N30/461; G01N30/465; G01N30/463
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3068686A
Cited
US3117225A
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US3120749A
Cited
US3156548A
Cited
US3177700A
Cited
US3304170A
Cited
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 |