RC

BUFFER AMPLIFIER ASSEMBLIES; TAPE FORMAT SEQUENCERS; AMPLIFIERS; DIFFERENTIAL AMPLIFIERS; CIRCUIT BOARDS CONTAINING ELECTRONIC AND ELECTRICAL COMPONENTS; POWER SUPPLIES; TRANSFORMERS; AND FILTERS

DATA ACQUISITION SYSTEMS; DIGITAL TO ANALOG CONVERTERS; ANALOG TO DIGITAL CONVERTERS; PRECISION VOLTAGE SOURCES; DIFFERENTIAL VOLTMENTERS; ANALOG TO DIGITAL MULTIPLEXERS; DATA DISTRIBUTORS; SEISMIC RECORDING SYSTEMS; LOGGING SYSTEMS; SAMPLE AND HOLD SYSTEMS; DIGITAL COMPUTER CIRCUITS; ANALOG COMPUTER CIRCUITS; AND COUNTERS