Patent US3695921A successfully refreshed from Google Patents.
USRE27910E
Expired / Lapsed
US
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Birtwell catheter
Assignee: —
•
Filing: 1971-07-29
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Granted: 1974-02-05
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Expires: 1991-07-29
Abstract
Abstract A FOLEY-TYPE BALLON CATHETER HAVING AN EXTRUDED BODY MADE OF SILICONE RUBBER WITH A SINGLE DRAINAGE LUMEN AND A PLURALITY OF INFLATION LUMENS, AND A MOLDED TIP OF SILICONE RUBBER ATTACHED TO THE BODY AND HAVING A DRAINAGE EYE COMMUNICATING WITH THE DRAINAGE LUMEN, AND A MOLDED FUNNEL ATTACHED TO THE OTHER END OF THE BODY AND HAVING PASSAGES WHICH COMMUNICATE WITH DRAINAGE AND INFLATION LUMENS.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:27
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |