U.S. federal trademark · Serial No. 71529092 · Reg. No. 0503884
BALLS USED IN MEASURING AND TESTING INSTRUMENTS INCLUDING VISCOSITY TESTING INSTRUMENTS, INSTRUMENTS FOR TESTING THE LUBRICATING QUALITY OF OIL, SCALES TO DETERMINE WEIGHTS, CALCULATING MACHINES, SPEEDOMETERS, THERMOSTATIC CONTROL APPARATUS, INSTRUMENTS FOR MEASURING THE HARDNESS OF METALS, COUNTERS, AND APERTURE SIZINGS
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