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US3428401A
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US
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Flame photometer
Assignee: Beckman Coulter Inc
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Filing: 1964-10-28
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Granted: 1969-02-18
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Expires: 1984-10-28
Abstract
No abstract record available.
Inventors
- 👤 Edmund Earl Buzza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:32
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/10; G01J1/16; G01J1/18; G01N; G01N21/00; G01N21/62; G01N21/71; G01N21/72
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) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |