73301857
Mar 19, 1981
Jan 12, 1982
Quartz Piezoelectric Crystals, Semifinished Piezoelectric Blanks, Electrode-Containing Filters for Utilizing Piezoelectric Crystals in Electric Circuits, Units Consisting of Piezoelectric Crystals Mounted in Electrode-Containing Filters Therefor, Electrically Heated Thermostatically Controlled Ovens Containing Electrodes for Utilizing Quartz Piezoelectric Crystals in Electric Circuits, Units Comprising of Quartz Piezoelectric Crystals in Electrically Heated Temperature Controlled Ovens, Temperature Compensated Crystal Oscillators, Crystal Controlled Filters and Discriminators, Crystal Controlled Thick Film Oscillators and Crystal Controlled Clock Oscillators
Electrical and Scientific Apparatus