9 ELECTRICAL CONDUCTORS, ELECTRICAL CIRCUITS AND ELECTRICAL CONTROLLERS, NAMELY, LOW FREQUENCY CRYSTALS, HIGH FREQUENCY CRYSTALS, INVERTED MESA CRYSTAL BLANKS, QUARTZ CRYSTALS, QUARTZ RESONATORS, OSCILLATORS, WIDE BANDWIDTH FILTERS, SURFACE MOUNT CRYSTALS, VOLTAGE CONTROL OSCILLATORS, TEMPERATURE COMPENSATED CRYSTAL OSCILLATORS, OVEN-CONTROLLED CRYSTAL OSCILLATORS, DUAL-IN LINE CLOCK OSCILLATORS, CLOCK OSCILLATORS, SURFACE MOUNT CLOCKS, DUAL IN-LINE VOLTAGE CONTROL CRYSTAL OSCILLATORS, SURFACE MOUNT VOLTAGE CONTROL CRYSTAL OSCILLATORS, TEMPERATURE COMPENSATED VOLTAGE CONTROL CRYSTAL OSCILLATORS, OVENIZED OSCILLATORS, AND FREQUENCY FILTERS, ALL FOR USE IN DIGITAL AND ANALOG ELECTRONIC DEVICES