US3412865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial kidney
Assignee: HERMAN L KUMME
•
Filing: 1967-09-05
•
Granted: 1968-11-26
•
Expires: 1987-09-05
Abstract
No abstract record available.
Inventors
- 👤 John F Lontz
- 👤 Herman L Kumme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:40
CPC Classifications
B; B01; B01D; B01D63/00; B01D63/08; B01D63/082; B01D63/0822; B01D61/00; B01D61/24; B01D61/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3332746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |