U.S. federal trademark · Serial No. 71670084 · Reg. No. 0607011
CENTRIFUGAL DUST SEPARATORS OR CONCENTRATORS OF THE CYCLONE TYPE WHEREIN GAS, PASSING AXIALLY THROUGH A CYLINDRICAL BODY, IS CAUSED TO WHIRL AND THEREBY CONCENTRATE ITS DUST LOAD IN THE OUTER PART OF THE GAS STREAM WHICH IS THEN SEPARATED FROM THE INNER OR CLEAN PART THEREOF
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