TRACOR

ELECTRICAL APPARATUS-NAMELY, RADIO RECEIVERS, SERVO-RESOLVERS, ELECTRONIC SERVOS, ELECTRICAL POWER SUPPLIES, INVERTERS, FREQUENCY SYNTHESIZERS, ANTENNAS, AND ANTENNA TUNING EQUIPMENT

MEASURING AND SCIENTIFIC APPLIANCES-NAMELY, PHASE TRACKING RECEIVERS, FREQUENCY DIFFERENCE METERS, OSCILLATORS, OSCILLATOR CIRCUITS, OSCILLATOR AND PHASE COMPARATOR CIRCUITS, ELECTRICAL ENERGY DISCRIMINATORS, ELECTRICAL COUNTERS, MAGNETIC COUNTERS, AND FREQUENCY DIVIDERS, AND CALIBRATIONAL, STANDARDIZATIONAL AND NAVIGATIONAL INSTRUMENTS INVOLVING SUCH COMPONENTS

HOROLOGICAL INSTRUMENTS-NAMELY, FREQUENCY STANDARDS, CLOCKS, FREQUENCY RESONATORS, TUNING FORK RESONATORS, AND TIMEKEEPING INSTRUMENTS INVOLVING SUCH COMPONENTS