73061599
Aug 28, 1975
Apr 5, 1977
HALLIBURTON ENERGY SERVICES INC.
Active Trademark
FULL-OPENING SUBSURFACE FORMATION TESTING TOOLS-NAMELY, FULL-OPENING TESTERS AND TESTER VALVES FOR DRAWDOWN TESTING AND PRESSURE BUILD-UP TESTING OF POTENTIAL OIL OR GAS PRODUCING FORMATIONS
Electrical and Scientific Apparatus