Patent US3147743A successfully refreshed from Google Patents.
Patent US2558987A successfully refreshed from Google Patents.
US2558987A
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Blood transfusion filter unit
Assignee: Individual
•
Filing: 1948-11-06
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Granted: 1951-07-03
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Expires: 1968-11-06
Abstract
No abstract record available.
Inventors
- 👤 John E B Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:50
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/502; A; A61; A61M; A61M5/00; A61M5/14; A61M5/165; C; C02; C02F; C02F1/00; C02F1/001; C02F1/003; G; G01; G01N; G01N1/00; G01N1/02; G01N1/04; G01N1/08; G01N2001/085; Y; Y10; Y10S; Y10S215/00; Y10S215/03
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) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |