Sorenson Research Co., Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4395806 Method of manufacturing a detachable balloon catheter assemblyExpiredNov 12, 81Aug 02, 83[B23P, A61M]
4395260 Drip chamberExpiredJun 01, 81Jul 26, 83[A61M]
4335729 Apparatus and method for suppressing resonance in an electromanometry systemExpiredMar 11, 80Jun 22, 82[A61B]
4311146 Detachable balloon catheter apparatus and methodExpiredMay 08, 80Jan 19, 82[A61M]
4291693 Fluid metering deviceExpiredNov 13, 79Sep 29, 81[A61M]
4282881 Manometer for infusion apparatusExpiredMay 10, 79Aug 11, 81[A61B]
4269387 Needle valve and method of manufacturing a needle valveExpiredAug 01, 79May 26, 81[F16K]
4245636 Continuous flushing apparatusExpiredJan 24, 79Jan 20, 81[F16K, A61M]
4224943 Cannula and method for bidirectional blood flowExpiredJan 24, 79Sep 30, 80[A61M]

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