U.S. federal trademark · Serial No. 71528266 · Reg. No. 0507577
FILTERS EMPLOYING A FILTERMASS OF COTTON OR OTHER FIBROUS MATERIAL, DIATOMACEOUS EARTH OR THE LIKE-NAMELY, LIQUID FILTERS, AIR AND GAS FILTERS, AND SLURRY FILTERS; SURFACE, DOUBLE-PIPE, AND MULTI-PIPE BEER COOLERS EMPLOYING LIQUID COOLANTS,
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