IONAC
INSOLUBLE GRANULAR OR BEAD-LIKE ION EXCHANGE AND ADSORBENT MATERIALS AS WELL AS APPARATUS-NAMELY, ION EXCHANGE UNITS, LIME SODA SOFTENERS, COAGULATING APPARATUS COMPRISING MEANS FOR ADDING COAGULATING CHEMICALS TO AQUEOUS LIQUIDS AND FILTERING THE SAME, FILTERS, AND HOT PRECIPITATION TYPE WATER SOFTENERS COMBINED WITH DEAERATORS, FOR PURIFYING AND TREATING AQUEOUS SOLUTIONS OF ELECTROLYTES AND FOR PURIFYING AND TREATING WATER
Cancelled · October 11, 1951 · 71619894 ·