Butler Drlg Fluids, Inc. Trademarks
DURA HOLE
Filed: July 15, 1983
a Drilling Fluid Additive for Use in Water Base Drilling Mud Systems
Owned by: Butler Drlg Fluids, Inc.
Serial Number: 73434645
BDF DURA HOLE
Filed: July 15, 1983
DRILLING FLUID ADDITIVE FOR USE IN WATER BASE DRILLING MUD SYSTEMS
Owned by: Butler Drlg Fluids, Inc.
Serial Number: 73434646
BDF
Filed: July 15, 1983
DRILLING FLUID ADDITIVE FOR USE IN WATER BASE DRILLING MUD SYSTEMS
Owned by: Butler Drlg Fluids, Inc.
Serial Number: 73434711
