U.S. federal trademark · Serial No. 76975725 · Reg. No. 2776752
APPARATUS FOR MEASURING AND CONTROL TECHNIQUE, NAMELY APPARATUS FOR MEASURING STREAMING POTENTIAL AND CONDUCTIVITY OF POLYELECTROLYTES AND PARTICLES IN COLLOIDAL SUSPENSIONS, AND FOR MEASURING PRESSURE AND ASSESSING THE PERFORMANCE OF ADDED CHEMICAL AIDS USED IN THE PAPER PRODUCTION INDUSTRY
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