Patent US2473153A successfully refreshed from Google Patents.
US2473153A
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US
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Blood filter
Assignee: CONTINENTAL PHARMACAL Co
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Filing: 1947-08-22
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Granted: 1949-06-14
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Expires: 1967-08-22
Abstract
No abstract record available.
Inventors
- 👤 Roger K Lager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:33
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/162; A61M2005/1623
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1199628A
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US2168270A
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US2222123A
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US2186987A
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US2212318A
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US2231564A
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US2338610A
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US2435820A
Cited
US2416391A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-13 | 1952-12-13 | 1953-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-13 | 1956-12-13 | 1957-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-13 | 1960-12-13 | 1961-06-14 | $7700.00 | Window Closed / Lapsed |