Patent US2765923A successfully refreshed from Google Patents.
US2765923A
Expired / Lapsed
US
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Blood filter
Assignee: Individual
•
Filing: 1953-04-03
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Granted: 1956-10-09
•
Expires: 1973-04-03
Abstract
No abstract record available.
Inventors
- 👤 Milan V Novak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:09
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/165; B; B01; B01D; B01D35/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190507090A
Cited
US1174784A
Cited
US1331732A
Cited
US1782531A
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US2153664A
Cited
US2341114A
Cited
US2470943A
Cited
US2504683A
Cited
US2644586A
Cited
US2702034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-09 | 1960-04-09 | 1960-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-09 | 1964-04-09 | 1964-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-09 | 1968-04-09 | 1968-10-09 | $7700.00 | Window Closed / Lapsed |