72259871
Dec 2, 1966
Mar 11, 1969
WATKINS-JOHNSON COMPANY
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TRAVELING-WAVE TUBES, BACKWARD-WAVE OSCILLATORS, YTTRIUM-IRON-GARNET FILTERS, OSCILLATORS, [ ELECTRONIC INTRUSION ALARMS, ] AMPLIFIERS, TRANSMITTERS, AND RECEIVERS
TELEMETERING AMPLIFIERS, TELEMETERING TRANSMITTERS, AND TELEMETERING RECEIVERS
PRODUCTION AND LABORATORY FURNACES