DRILLING WELL CONTROL, INC. Trademarks
DWC DRILLING WELL CONTROL, INC. HOUSTON LAFAYETTE
Filed: October 23, 1967
OIL WELL UNIT FOR CONTROLLING AND REGULATING BACK PRESSURE IN A WELL BEING DRILLED
Owned by: DRILLING WELL CONTROL, INC.
Serial Number: 72283113
KICK-KILLER KK
Filed: September 30, 1968
DRILLING WELL CONTROL UNIT FOR CONTROLLING BACK PRESSURE ON A WELL BEING DRILLED
Owned by: DRILLING WELL CONTROL, INC.
Serial Number: 72308473
