Mark Identification
WATCHDOG
Serial Number
73359245
Filing Date
Apr 12, 1982
Trademark by
Classification Information
INSTRUMENTATION UTILIZED IN THE DRILLINGOF OIL AND GAS WELLS NAMELY GAS DETECTORS TRIP GUARDS FLOW SENSORS AND TRIP MONITORS LOSS/GAIN INDICATORS PUMP STROKE COUNTERS PIT VOLUME TOTALIZERS
Electrical and Scientific Apparatus