XTRA HOLE
Filed: August 11, 1947
TOOL JOINTS EMPLOYED IN COUPLING TOGETHER SECTIONS OF DRILL STEM IN WELL DRILLING
Owned by: HUGHES TOOL COMPANY
Serial Number: 71531039
HUGHE SET
Filed: August 4, 1952
ROCK BITS
Owned by: HUGHES TOOL COMPANY
Serial Number: 71633453
ROTA-BLAST
Filed: January 23, 1961
Earth Boring Drills
Owned by: HUGHES TOOL COMPANY
Serial Number: 72112266
HUGHES ARC
Filed: May 24, 1961
HARDFACING ON TOOL JOINTS
Owned by: HUGHES TOOL COMPANY
Serial Number: 72120722
HT
Filed: December 18, 1961
AIRCRAFT, PARTICULARLY ROTARY WING AIRCRAFT
Owned by: HUGHES TOOL COMPANY
Serial Number: 72134227
HUGHES 269A
Filed: December 18, 1961
HELICOPTERS
Owned by: HUGHES TOOL COMPANY
Serial Number: 72134229
269A
Filed: December 18, 1961
HELICOPTERS
Owned by: HUGHES TOOL COMPANY
Serial Number: 72134230
HT
Filed: December 18, 1961
COMPANY MAGAZINE AND TECHNICAL INFORMATION BROCHURES
Owned by: HUGHES TOOL COMPANY
Serial Number: 72134231
HUGHES
Filed: June 7, 1962
Earth Penetrating Tools Including Drill Bits, [ Core Bits, Reamers, ] Shaft Cutters [ and Tunnel Cutters ]; Drill String…
Owned by: HUGHES TOOL COMPANY
Serial Number: 72146383
HUGHES 300
Filed: May 11, 1964
HELICOPTERS
Owned by: HUGHES TOOL COMPANY
Serial Number: 72193168
PROTECTO MAGIC
Filed: January 24, 1966
MIXTURE OF POWDERED ASPHALT AND POWDERED INERT FILLER WHICH MAY BE USED AS AN ADDITIVE FOR WATER BASE DRILLING FLUIDS OR…
Owned by: HUGHES TOOL COMPANY
Serial Number: 72237147
BLUE DIAMOND
Filed: December 21, 1966
TONG DIES FOR USE IN OIL WELL EQUIPMENT
Owned by: HUGHES TOOL COMPANY
Serial Number: 72261192
SOFT-DRIL
Filed: August 30, 1976
SHOCK ABSORBING APPARATUS USED IN THE DRILL STRING OF EARTH BORING MACHINES
Owned by: HUGHES TOOL COMPANY
Serial Number: 73098258
CENTRIGARD
Filed: January 23, 1978
ELECTRICAL CONTROL APPARATUS-NAMELY, CONTROLLERS FOR ELECTRIC MOTORS
Owned by: HUGHES TOOL COMPANY
Serial Number: 73156294
HUGHES
Filed: August 8, 1978
EARTH DRILLING MACHINES, SHOCK ABSORBERS FOR EARTH DRILLING OPERATIONS, ROTARY PERCUSSION EARTH DRILLING BITS, CRANE ATTACHMENTS…
Owned by: HUGHES TOOL COMPANY
Serial Number: 73182258
HUGHES
Filed: August 8, 1978
Well Drilling Services Including Welding Tool Joints to Drill Pipe
Owned by: HUGHES TOOL COMPANY
Serial Number: 73182259
HT HUGHES
Filed: October 23, 1978
CAPS
Owned by: HUGHES TOOL COMPANY
Serial Number: 73190309
MCMURRY HUGHES
Filed: August 20, 1979
Gas Lift Valves and Components Therefor Used for Petroleum Recovery from Underground Sources
Owned by: HUGHES TOOL COMPANY
Serial Number: 73228319
SOFT-SHOC
Filed: November 5, 1979
Shock Absorbers Used in the Drill String of Rotary Well Drilling Equipment
Owned by: HUGHES TOOL COMPANY
Serial Number: 73238092
BOT BROWN OIL TOOLS INC. HOUSTON TEXAS
Filed: April 23, 1980
Tools for Drilling, Completion, and Workover of Oil and Gas Wells-Namely, Packers, Polished Bore Receptacles, Bridge Plugs…
Owned by: HUGHES TOOL COMPANY
Serial Number: 73259328
BOT
Filed: April 23, 1980
Tools for Drilling, Completion, and Workover of Oil and Gas Wells-Namely, Packers, Polished Bore Receptacles, Bridge Plugs…
Owned by: HUGHES TOOL COMPANY
Serial Number: 73259329
BOT
Filed: April 23, 1980
Tools for Drilling, Completion, and Workover of Oil and Gas Wells-Namely, Packers, Polished Bore Receptacles, Bridge Plugs…
Owned by: HUGHES TOOL COMPANY
Serial Number: 73259330
DOODLEBUGGER
Filed: April 12, 1982
All-Purpose, Blade-Type Earth Boring Bits for Shot Hole, Exploration, Slim Hole, Blast Hole and Water Well Drilling
Owned by: HUGHES TOOL COMPANY
Serial Number: 73359187
BROWN
Filed: June 11, 1982
Well Completion and Workover Services
Owned by: HUGHES TOOL COMPANY
Serial Number: 73369241
RINGLOK
Filed: July 20, 1982
Earth Boring Drill Bits Used in the Oil, Gas and Mineral Industries for Drilling
Owned by: HUGHES TOOL COMPANY
Serial Number: 73375696
CENTRILIFT HUGHES
Filed: December 13, 1982
Electrical Submersible Well Pumps and Parts Thereof
Owned by: HUGHES TOOL COMPANY
Serial Number: 73405965
XTRAWEIGHT
Filed: April 25, 1983
Drill Pipe for Drilling Wells
Owned by: HUGHES TOOL COMPANY
Serial Number: 73422962
SUPERWEIGHT
Filed: April 25, 1983
Drill Pipe for Drilling Wells
Owned by: HUGHES TOOL COMPANY
Serial Number: 73422963
CASING PLUS
Filed: June 20, 1983
Tubular Metal Tool Joints, i.e., Threaded Tubular Connectors for Well Drilling Pipe
Owned by: HUGHES TOOL COMPANY
Serial Number: 73431062
SMOOTHDRILL
Filed: October 18, 1983
SHOCK ABSORBING COUPLINGS FOR DRILL PIPE
Owned by: HUGHES TOOL COMPANY
Serial Number: 73448525
SMOOTHDRILL II
Filed: October 18, 1983
SHOCK ABSORBING COUPLINGS FOR ROOF DRILL STEEL
Owned by: HUGHES TOOL COMPANY
Serial Number: 73448526
ECONOLIFT
Filed: June 19, 1984
PROGRESSING CAVITY OIL WELL PUMP SYSTEM AND COMPONENTS COMPRISING A STATOR, A ROTOR, A DRIVE HEAD AND A MOTOR
Owned by: HUGHES TOOL COMPANY
Serial Number: 73486003
AQUAFOAM
Filed: June 28, 1984
OIL AND GAS WELL STIMULATION SERVICES
Owned by: HUGHES TOOL COMPANY
Serial Number: 73487525
TRANSTOP
Filed: August 20, 1984
Electrical Transient Suppressors Particularly for Protecting Electrical Submersible Oil Well Pumps from Electrical Transients…
Owned by: HUGHES TOOL COMPANY
Serial Number: 73495659
SAF-T-SPIN
Filed: August 23, 1985
DRILL PIPE SPINNERS
Owned by: HUGHES TOOL COMPANY
Serial Number: 73555189
SPINTORC
Filed: February 13, 1986
MACHINES COMBINING DRILL PIPE SPINNERS AND TORQUE WRENCHES
Owned by: HUGHES TOOL COMPANY
Serial Number: 73582990
Image Trademark
Filed: December 12, 1986
ELECTRICAL SUBMERSIBLE WELL PUMPS AND PARTS THEREOF
Owned by: HUGHES TOOL COMPANY
Serial Number: 73635012
SUPER SCOOP
Filed: December 12, 1986
EARTH BORING BITS
Owned by: HUGHES TOOL COMPANY
Serial Number: 73635013
ELECTRO FORM
Filed: May 15, 1987
ELECTRIC POWER TRANSFORMERS
Owned by: HUGHES TOOL COMPANY
Serial Number: 73661144
