73771581
Dec 27, 1988
Apr 24, 1990
MEMBRANES MADE IN WHOLE OR IN PART OF PLASTICS AND/OR CELLULOSE FOR USE IN PHYSIOCHEMICAL SEPARATION AND CONCENTRATION PROCESSES IN THE FOOD, DAIRY, BEVERAGE, PHARMACEUTICAL, BIOTECHNOLOGY, CHEMICAL, WATER TREATMENT, ELECTRONIC, METAL-WORKING AND AUTOMOTIVE INDUSTRIES
Rubber Goods