31 MECHANICAL APPARATUS AND MACHINES EMPLOYING FILTERS FOR CLEANING TABLETS, DE-DUSTING TABLETS AND DUST COLLECTING IN THE PHARMACEUTICAL INDUSTRY, FOR DE-DUSTING AND FOR COLLECTING DUST IN THE CHEMICAL, PLASTICS, FOOD AND CEMENT INDUSTRIES AND IN ANY OTHER INDUSTRY IN WHICH DUST-PRODUCING DEVICES ARE EMPLOYED
34 FLUID BED DRYERS FOR THE DRYING OF MATERIALS AND PRODUCTS IN THE CHEMICAL, PHARMACEUTICAL, TEXTILE AND FOOD INDUSTRIES AND OTHER INDUSTRIES
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