US3483990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dialyzer apparatus
Assignee: Beckman Coulter Inc
•
Filing: 1967-03-06
•
Granted: 1969-12-16
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Expires: 1987-03-06
Abstract
No abstract record available.
Inventors
- 👤 Robert L Litle
- 👤 James C Sternberg
- 👤 Rudolf Deuringer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:47
CPC Classifications
B; B01; B01D; B01D63/00; B01D63/06; B01D61/00; B01D61/24; B01D61/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR1354936A
Cited
US2276986A
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US2664395A
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US2687997A
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DE847182C
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CH291180A
Cited
US2987472A
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US3291568A
Cited
US3337051A
Cited
US3389797A
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US3400825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |