SHELHIGH, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4527549 Method of and means for intraaortic assistExpiredSep 30, 82Jul 09, 85[A61M]
4423730 Atriotomy button and implantation deviceExpiredMar 01, 82Jan 03, 84[A61B, A61M]
4275469 Prosthetic heart valveExpiredDec 13, 79Jun 30, 81[A61F]

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