US3516399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic catheter blood flow probe
Assignee: Individual
•
Filing: 1967-04-18
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Granted: 1970-06-23
•
Expires: 1987-04-18
Abstract
No abstract record available.
Inventors
- 👤 Charles A Barefoot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:31
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/026; A61B5/0265; A61B5/027; G; G01; G01F; G01F1/00; G01F1/56; G01F1/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3347224A
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 |