U.S. federal trademark · Serial No. 72211618 · Reg. No. 3712/56
FILTERS AND FILTERING APPARATUS, PARTICULARLY FOR THE PURPOSE OF REMOVING DUST, FUMES, NOXIOUS GASES AND FOR THE PURPOSE OF REMOVING AND/OR TRANSFERRING HEAT TO AND FROM THE FILTERED LIQUID OR GAS, AND OTHER MECHANICAL DUST AND GAS SCRUBBERS AND HEAT EXCHANGERS FOR INDUSTRIAL AND PYROMETALLURGICAL APPLICATIONS, AND PARTS AND ACCESSORIES THEREFOR
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