NORTON CHRISTENSEN GMBH Trademarks
TURBOBACK
Filed: September 29, 1976
STABILIZERS FOR WELL DRILL STRINGS; AND PARTS THEREOF
Owned by: NORTON CHRISTENSEN GMBH
Serial Number: 73101468
MASON-JAR
Filed: September 29, 1976
MECHANICAL TOOLS AND PARTS THEREOF FOR FREEING STUCK WELL DRILL STRINGS BY IMPARTING JARRING BLOWS
Owned by: NORTON CHRISTENSEN GMBH
Serial Number: 73101470
NAVI-DRILL
Filed: January 9, 1978
DOWNHOLE MOTORS AND PARTS THEREOF FOR DRILLING BORE HOLES IN EARTH FORMATIONS
Owned by: NORTON CHRISTENSEN GMBH
Serial Number: 73154565
