U.S. federal trademark · Serial No. 72254602 · Reg. No. 0861610
IMPEDANCE BRIDGES, TRANSFER STANDARDS, PRECISION VOLTMETERS OF VARIOUS TYPES, VERNIER POTENTIOMETERS, DECADE POTENTIOMETERS, AND NULL DETECTORS
ELECTRICAL POWER SUPPLIES, PRECISION RESISTORS, FREQUENCY SYNTHESIZERS, FREQUENCY COMPARATORS, VLF RECEIVER-COMPARATORS, DISTRIBUTION AMPLIFIERS, AND PRECISION VOLTAGE DIVIDERS
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