Patent US2982416A successfully refreshed from Google Patents.
US2982416A
Expired / Lapsed
US
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Dialysis apparatus
Assignee: MARVALAND Inc
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Filing: 1957-04-25
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Granted: 1961-05-02
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Expires: 1977-04-25
Abstract
No abstract record available.
Inventors
- 👤 James F Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:17
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/24; B01D61/28; B01D63/00; B01D63/08; B01D63/082; B01D69/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2569243A
Cited
US2618357A
Cited
GB693495A
Cited
US2686154A
Cited
US2735812A
Cited
US2756206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |