Patent US3516548A successfully refreshed from Google Patents.
US3516548A
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US
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Dialysis means having spacing disks with gratings displaced or twisted in relation to each other
Assignee: Gambro AB
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Filing: 1968-05-22
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Granted: 1970-06-23
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Expires: 1988-05-22
Abstract
No abstract record available.
Inventors
- 👤 Nils Alwall
- 👤 Nils Olov Wilhelm Hagstrom
- 👤 Bo Lennart Ostergren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:43
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/24; B01D61/28; B01D63/00; B01D63/08; B01D63/082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3411630A
Cited
US3362540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |