74157921
Apr 17, 1991
May 2, 1995
membrane filters used for liquid purification or used as an ion-exchange medium for industrial use, cellulose acetate film for electrophoresis, pressure sensitive recording material consisting of plastic sheets coated with color-developing material contained in a layer of micro capsulated color-forming material for industrial use; plastic film for sealing for use in connection with sealing or tightening of glass, ceramic and metal containers for industrial and scientific use
Rubber Goods