Patent US2884150A successfully refreshed from Google Patents.
US2884150A
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US
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Hematocrit closures
Assignee: Biological Research Inc
•
Filing: 1956-04-05
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Granted: 1959-04-28
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Expires: 1976-04-05
Abstract
No abstract record available.
Inventors
- 👤 Theodore E Weichselbaum
- 👤 Edwin G Weischselbaum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:48
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/483; G01N33/487; G01N33/49; Y; Y10; Y10S; Y10S206/00; Y10S206/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US607548A
Cited
US1048897A
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US1179622A
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US1949058A
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US2394875A
Cited
US2680497A
Cited
US2722257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |