US3411448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Human fluid pumping apparatus
Assignee: Bio Medical Systems Inc
•
Filing: 1967-04-14
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Granted: 1968-11-19
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Expires: 1987-04-14
Abstract
No abstract record available.
Inventors
- 👤 Wrangell Charles P E Von
- 👤 Thomas F Helms
- 👤 Richard C Tucker
- 👤 Henry O Willrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:08
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/0009; F04B43/0054; F04B43/0063; A; A61; A61M; A61M1/00; A61M1/36; A61M1/3621; A61M60/00; A61M60/10; A61M60/104; A61M60/109; A61M60/113; A61M60/40; A61M60/424; A61M60/438; A61M60/441; A61M60/443; F04B49/00; F04B49/06; F04B9/00; F04B9/02; F04B9/04; F04B9/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1568091A
Cited
US2845874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |