HT
Filed: November 27, 1918
ROTARY EARTH-BORING DRILLS, DRILL-COLLARS, MILLING-TOOLS [, AND TAPS ]
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 71114397
TOLHURST
Filed: October 18, 1921
Centrifugal Drying Machines, Also Known as Hydro-Extractors
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 71154289
TRI-CONE
Filed: December 19, 1947
WELL DRILLS
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 71544867
PETRONAUBA
Filed: November 29, 1950
MICROCRYSTALLINE WAX
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 71607068
CENTER-SLUNG
Filed: November 28, 1951
CENTRIFUGAL EXTRACTORS
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 71621745
BE SQUARE
Filed: February 11, 1952
MICROCRYSTALLINE WAX
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 71624772
DEMULSO
Filed: December 20, 1952
DEMULSIFIER
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 71639829
BAKER
Filed: March 16, 1953
OIL, GAS, WATER, AND SULPUR WELL TOOLS AND EQUIPMENT-NAMELY, CASING COLLARS, CASING SHOES, [ TUBING COLLARS, ] TUBING SHOES…
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 71643630
MAGNA-D-WAX
Filed: June 22, 1953
LIQUID SOLVENT FOR CLEANSING AND REMOVING WAXES DEPOSITED IN OIL WELLS AND PRODUCTION FLOW LINES THEREOF
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 71649167
PETRECO
Filed: November 7, 1957
CATALYTIC MATERIAL FOR HYDROCARBON SWEETENING PROCESS
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 72040257
PETRECO
Filed: January 13, 1958
DEMULSIFYING, DEHYDRATING, DESALTING, AND PURIFICATION OF HYDROCARBONS
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 72043868
TOLAD
Filed: June 4, 1958
ADDITIVES FOR PETROLEUM FUEL PRODUCTS
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 72052901
NIAGARA
Filed: January 23, 1959
INDUSTRIAL FILTER UNITS, ACCESSORIES AND PARTS THEREFOR
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 72066315
CALTROL
Filed: May 25, 1959
Inhibited Drill Mud Compound, an Additive for Use in Conversion to an Inhibited Mud System
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 72074441
MILSTARCH
Filed: May 25, 1959
Pre-Gelatinized Corn Starch for Use in Oil Drilling Muds as a General Purpose Fluid Loss Reduction Agent
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 72074444
MILFLAKE
Filed: May 29, 1959
SHREDDED CELLOPHANE FLAKE, USED AS A FLAKE-TYPE LOSS CIRCULATION ADDITIVE FOR DRILLING MUDS
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 72074774
CENTRILIFT
Filed: January 11, 1960
Well Pumps and Parts Thereof
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 72088727
THERMOSEAL
Filed: February 10, 1964
OIL, GAS, WATER, AND SULPHUR WELL TOOLS AND EQUIPMENT-NAMELY, SUBSURFACE WELL PACKER APPARATUS AND ACCESSORIES THEREFOR
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 72186318
PHD
Filed: March 31, 1965
MONITORING AND CONTROL APPARATUS FOR PUMPS AND PARTS THEREOF FOR REPLACEMENT AND REPAIR
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 72215382
MIL-CLEAN
Filed: August 6, 1965
CHEMICAL COMPOSITION WHICH IS AN INDUSTRIAL CLEANING AGENT
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 72225177
LIGCON
Filed: December 21, 1965
DRILLING FLUID ADDITIVE USEFUL IN THE CONTROL OF FILTRATION AND IN DISPERSING AND EMULSIFYING COMPONENTS OF THE DRILLING…
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 72235008
MUD-SWEEP
Filed: July 27, 1967
CHEMICAL PREFLUSH PREPARATION TO INCREASE BONDING STRENGTH WHEN CEMENTING OIL WELLS
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 72277236
BAKERSEAL
Filed: July 27, 1970
THREAD SEALING AND LUBRICATING COMPOUNDS
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 72366312
HAI 1950
Filed: September 24, 1971
GAS ANALYZERS AND DETECTORS FOR CHEMICAL PROCESSING AND CONTROL, AND PARTS THEREFOR
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 72403503
CARBO-MUL
Filed: April 18, 1972
CHEMICAL ADDITIVE FOR USE IN THE TREATMENT OF OIL WELL DRILLING MUD
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 72421711
ECP
Filed: July 19, 1972
REINFORCED ELASTOMER PACKERS FOR USE IN SUCH AREAS AS WELL DRILLING AND PRODUCING AND IN MINING
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 72430286
MAGNACIDE
Filed: August 17, 1973
BACTERICIDES, BIOCIDES AND HERBICIDES
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 72465872
ZAP-LOK
Filed: September 28, 1973
PIPE JOINING EQUIPMENT
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 73002310
SACKED FISHING TOOLS
Filed: December 8, 1975
CHEMICAL COMPOSITION FOR USE IN OIL OR GAS WELLS, PRIMARILY FOR AIDING THE RELEASE OF STUCK DRILL PIPE OR THE LIKE
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 73071236
MIL-TEMP
Filed: August 12, 1976
CHEMICALS AND CHEMICAL COMPOSITIONS-NAMELY, A DRILLING FLUID ADDITIVE TO PREVENT THERMAL DEGRADATION OF THE SYSTEM
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 73096454
EXLOG
Filed: October 28, 1977
GEOLOGICAL AND ENGINEERING WELL LOGGING SERVICES TO THE OIL INDUSTRY
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 73146448
CALNOX
Filed: December 22, 1977
SURFACE ACTIVE AGENTS FOR INDUSTRIAL USE AND/OR SCALE INHIBITORS FOR INDUSTRIAL USE, SUCH USES BEING PARTICULARLY IN THE…
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 73153079
EXLOG
Filed: October 30, 1978
Geological and Engineering Well Logging Services
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 73191155
FLIP TO TRIP
Filed: October 5, 1979
Electronic Apparatus for the Monitoring and Display of Data Obtained from a Subterranean Well
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 73234161
TELEDRILL
Filed: October 5, 1979
Electronic Instrumentations for the Compilation and Dissemination of Data Useful in the Drilling, Completion or Workover…
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 73234162
ODI
Filed: February 11, 1980
SUBMERSIBLE PUMPS, MOTORS AND EQUALIZERS
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 73249764
MARK III
Filed: April 25, 1980
Basket Centrifuges
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 73259696
TELECO
Filed: May 7, 1980
Oil and Gas Well Measurement Services and Measured Borehole Parameter Telemetry Services
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 73261124
WESTERN
Filed: October 9, 1980
Services to the Oil Industry in Acidizing, Fracturing, Cementing [and Offshore Drilling]
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 73281052
BIRD
Filed: April 23, 1981
FIBER SLURRY PREPARATION MACHINES FOR FIBER SEPARATING, SLURRY CLEANING, SCREENING AND DEINKING AND FIBER RECOVERY AND SYSTEMS…
Owned by: BAKER HUGHES INCORPORATED
Serial Number: 73307050
