Patent US2418553A successfully refreshed from Google Patents.
US2948185A
Expired / Lapsed
US
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Spectrophotometric system
Assignee: Beckman Coulter Inc
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Filing: 1958-02-24
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Granted: 1960-08-09
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Expires: 1978-02-24
Abstract
No abstract record available.
Inventors
- 👤 William M Ward
- 👤 Ashley Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:29
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/02; G01J3/06; G01J3/28; G01J3/30; G01J3/32
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) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |