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US3520298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Peritoneal dialysis apparatus
Assignee: Individual
•
Filing: 1967-08-10
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Granted: 1970-07-14
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Expires: 1987-08-10
Abstract
No abstract record available.
Inventors
- 👤 Kurt Lange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:18
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/14; A61M1/28; A61M1/281; A61M1/282; A61M1/284; A61M1/285
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2257369A
Cited
US3064653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |