HYDRIL
Filed: June 3, 1929
WELL-DRILLING MACHINERY AND TOOLS-NAMELY, [ HYDRAULIC-FEED ROTARY TABLES, BEING WELL-DRILLING TOOLS EACH OF WHICH COMPRISES…
Owned by: HYDRIL COMPANY
Serial Number: 71284971
HYDRIL
Filed: June 3, 1929
WELL-DRILLING MACHINERY AND TOOLS-NAMELY, [ HYDRAULIC-FEED ROTARY TABLES, BEING WELL-DRILLING TOOLS EACH OF WHICH COMPRISES…
Owned by: HYDRIL COMPANY
Serial Number: 71284972
Image Trademark
Filed: June 3, 1929
WELL-DRILLING MACHINERY AND TOOLS-NAMELY, [ HYDRAULIC-FEED ROTARY TABLES, BEING WELL-DRILLING TOOLS EACH OF WHICH COMPRISES…
Owned by: HYDRIL COMPANY
Serial Number: 71284973
HYDRIL
Filed: March 12, 1954
PULSATION DAMPENERS, [ VALVES OF ALL KINDS AND PIPE FITTINGS, ] BLOWOUT PREVENTERS [, ACCUMULATORS, CASING JOINTS, TUBING…
Owned by: HYDRIL COMPANY
Serial Number: 71662540
TRIPLESEAL
Filed: January 22, 1957
PIPE JOINTS
Owned by: HYDRIL COMPANY
Serial Number: 72022921
SMART
Filed: August 19, 1971
REMOTE DATA GATHERING AND CONTROL SYSTEMS, AND TELEMETRY SYSTEMS, FOR USE IN MONITORING AND CONTROLLING FLUID FLOW RATES…
Owned by: HYDRIL COMPANY
Serial Number: 72400586
HYDRIL
Filed: November 17, 1980
Repair and Maintenance of Oil and Gas Wells and Including Threading of Tubing, Pipe, Casing and Accessories
Owned by: HYDRIL COMPANY
Serial Number: 73286078
HYDRIL
Filed: November 17, 1980
Repair and Maintenance of Oil and Gas Wells and Including Threading of Tubing, Pipe, Casing and Accessories
Owned by: HYDRIL COMPANY
Serial Number: 73286216
FLATPAK
Filed: November 30, -0001
REMOTE CONTROL LINKAGE FOR SUBSEA EQUIPMENT
Owned by: HYDRIL COMPANY
Serial Number: 73286890
FLEXPAK
Filed: November 26, 1980
Remote Control Umbilical Linkage in the Nature of Electrical, Hydraulic or Electro-Hydraulic Conduits Enclosed in a Protective…
Owned by: HYDRIL COMPANY
Serial Number: 73287472
FLOATGUARD
Filed: June 25, 1981
Valves for Controlling the Flow of Fluids in Well Drilling Operations and which Operate Primarily as Automatic Valves
Owned by: HYDRIL COMPANY
Serial Number: 73316310
MUDGUARD
Filed: June 25, 1981
Valves for Controlling the Flow of Fluids in Well Drilling Operations and which Operate Primarily as Automatic Valves
Owned by: HYDRIL COMPANY
Serial Number: 73316311
DRILLGUARD
Filed: June 25, 1981
Valves for Controlling the Flow of Fluids in Well Drilling Operations and which Operate Primarily as Automatic Valves
Owned by: HYDRIL COMPANY
Serial Number: 73316312
CHECKGUARD
Filed: June 25, 1981
Valves for Controlling Flow of Fluids in Well Drilling
Owned by: HYDRIL COMPANY
Serial Number: 73316328
KELLYGUARD
Filed: June 25, 1981
Fluid Flow Controlling Valves
Owned by: HYDRIL COMPANY
Serial Number: 73316339
FLATPAK
Filed: July 13, 1983
Encapsulated Remote Control Linkage Conduits for Subsea Equipment
Owned by: HYDRIL COMPANY
Serial Number: 73434402
GK
Filed: June 25, 1984
WELLBORE EQUIPMENT, NAMELY, ANNULAR BLOWOUT PREVENTERS AND PARTS THEREFOR
Owned by: HYDRIL COMPANY
Serial Number: 73486854
GX
Filed: June 25, 1984
WELLBORE EQUIPMENT, NAMELY ANNULAR BLOWOUT PREVENTERS AND PARTS THEREFOR
Owned by: HYDRIL COMPANY
Serial Number: 73486856
GL
Filed: August 17, 1984
ANNULAR BLOWOUT PREVENTERS AND PARTS THEREFOR
Owned by: HYDRIL COMPANY
Serial Number: 73495715
CHECKGUARD
Filed: July 20, 1989
VALVES FOR CONTROLLING FLOW FLUIDS IN WELL DRILLING
Owned by: HYDRIL COMPANY
Serial Number: 73813655
FLEX-LOK
Filed: April 17, 1991
non-metal protectors for drill pipe used for drilling oil, gas or water wells
Owned by: HYDRIL COMPANY
Serial Number: 74157951
MLD
OFFSHORE DRILLING SERVICES
Owned by: HYDRIL COMPANY
Serial Number: 75757702
SUBSEA MUDLIFT DRILLING
OFFSHORE DRILLING EQUIPMENT
Owned by: HYDRIL COMPANY
Serial Number: 75757703
SUBSEA MUDLIFT DRILLING
OFFSHORE DRILLING SERVICES
Owned by: HYDRIL COMPANY
Serial Number: 75757704
MUDLIFT
OFFSHORE DRILLING EQUIPMENT
Owned by: HYDRIL COMPANY
Serial Number: 75757706
MLD
OFFSHORE DRILLING EQUIPMENT
Owned by: HYDRIL COMPANY
Serial Number: 75757707
SUBSEA MUDLIFT DRILLING
OFFSHORE DRILLING EQUIPMENT
Owned by: HYDRIL COMPANY
Serial Number: 75757708
MUDLIFT
OFFSHORE DRILLING SERVICES
Owned by: HYDRIL COMPANY
Serial Number: 75757874
SMD
OFFSHORE DRILLING SERVICES
Owned by: HYDRIL COMPANY
Serial Number: 75757943
SUBSEA MUDLIFT DRILLING
OFFSHORE DRILLING SERVICES
Owned by: HYDRIL COMPANY
Serial Number: 75758064
SMD
OFFSHORE DRILLING EQUIPMENT
Owned by: HYDRIL COMPANY
Serial Number: 75758065
WORKING UNDER PRESSURE IS OUR BUSINESS
OIL FIELD SERVICES, NAMELY THREADING SERVICES FOR OIL FIELD PIPES AND COMPONENTS THEREFOR, NAMELY, TUBING AND CASING; REPAIR…
Owned by: HYDRIL COMPANY
Serial Number: 76265210
PH-6
Oil and gas well metal pipes, casings and threaded connectors therefore
Owned by: HYDRIL COMPANY
Serial Number: 78685934
