U.S. federal trademark · Serial No. 72432559 · Reg. No. 13860
ELECTRICALLY DRIVEN, UNBALANCED MOTORS EACH INCLUDING A SHAFT HAVING A CENTRIFUGAL MASS AT EACH END FOR IMPARTING VIBRATORY MOTION TO A VARIETY OF MECHANISMS, SUCH AS VIBRATING CHUTES, SCREENS, FEEDERS, GRATES, ETC
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