The United States of America as represented by the Secretary of the Department of Health, Education & Welfare

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4313446 Steel wire pressure aesthesiometerExpiredMar 11, 80Feb 02, 82[A61B]
4244787 Apparatus and method for determining serum concentrates of metabolites by monitoring dialysate fluidExpiredJun 11, 79Jan 13, 81[G01N]
4222126 Unitized three leaflet heart valveExpiredDec 14, 78Sep 16, 80[A61F]
4182678 Micro-scale countercurrent chromatographExpiredDec 14, 78Jan 08, 80[B01D]

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