72420649
Apr 7, 1972
Nov 27, 1973
F. W. BEL. INC.
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MAGNETIZERS, STABILIZERS AND POWER SYSTEM TRANSDUCERS
HALL EFFECT DEVICES, GAUSSMETERS, HALL GENERATORS, HALL MULTIPLIERS, WATTMETERS, EDDY CURRENT TESTING INSTRUMENTS, MAGNETIC REACTION ANALYZERS AND CALIBRATION MAGNETS