| WHI DUHN OIL TOOL, INC.
76281433 28 Jun 2001 | on 21 Mar 2014 | CUSTOM MANUFACTURE OF OIL FIELD MACHINERY FOR OTHERS,WELLHEADS; DUAL W... Class 007 Class 007 Machinery Products CUSTOM MANUFACTURE OF OIL FIELD MACHINERY FOR OTHERS Class 040 Class 040 Treatment & Processing of Materials Services WELLHEADS; DUAL WELLHEADS; ELECTRIC FEEDTHRU WELLHEADS; WELLHEAD EQUIPMENT, NAMELY CASING HEADS, CASING HANGERS, TUBING HEADS, TUBING HEAD SPOOLS, SECONDARY MECHANICAL SEALS, TUBING HANGERS, WELLHEAD TUBING HEAD ADAPTERS, WELLHEAD FLANGES, WELLHEAD CROSSES AND TEES, TREE CAPS, WELLHEAD AND CHRISTMAS TREE FLUID AND GAS FLOW VALVES, WELLHEAD AND CHRISTMAS TREE FLUID AND GAS FLOW CHOKES, TENSION SET PACKERS, RING SEAL PACKERS, AND ANY COMBINATION OF THE AFOREMENTIONED GOODS SOLD AS A UNIT | | | WHI DUHN OIL TOOL, INC.
76281437 28 Jun 2001 | on 02 Aug 2013 | WELLHEADS; DUAL WELLHEADS; ELECTRIC FEEDTHRU WELLHEADS; WELLHEAD EQUIP... Class 007 Class 007 Machinery Products WELLHEADS; DUAL WELLHEADS; ELECTRIC FEEDTHRU WELLHEADS; WELLHEAD EQUIPMENT, NAMELY CASING HEADS, CASING HANGERS, TUBING HEADS, TUBING HEAD SPOOLS, SECONDARY MECHANICAL SEALS, TUBING HANGERS, WELLHEAD TUBING HEAD ADAPTERS, WELLHEAD FLANGES, WELLHEAD CROSSES AND TEES, TREE CAPS, WELLHEAD AND CHRISTMAS TREE FLUID AND GAS FLOW VALVES, WELLHEAD AND CHRISTMAS TREE FLUID AND GAS FLOW CHOKES, TENSION SET PACKERS, RING SEAL PACKERS, AND ANY COMBINATION OF THE AFOREMENTIONED GOODS SOLD AS A UNIT | | | QDF DUHN OIL TOOL, INC.
76281436 28 Jun 2001 | on 26 Jul 2013 | WELLHEADS; DUAL WELLHEADS; ELECTRIC FEEDTHRU WELLHEADS; WELLHEAD EQUIP... Class 007 Class 007 Machinery Products WELLHEADS; DUAL WELLHEADS; ELECTRIC FEEDTHRU WELLHEADS; WELLHEAD EQUIPMENT, NAMELY CASING HEADS, CASING HANGERS, TUBING HEADS, TUBING HEAD SPOOLS, SECONDARY MECHANICAL SEALS, TUBING HANGERS, WELLHEAD TUBING HEAD ADAPTERS, WELLHEAD FLANGES, WELLHEAD CROSSES AND TEES, TREE CAPS, WELLHEAD AND CHRISTMAS TREE FLUID AND GAS FLOW VALVES, WELLHEAD AND CHRISTMAS TREE FLUID AND GAS FLOW CHOKES, TENSION SET PACKERS, RING SEAL PACKERS, AND ANY COMBINATION OF THE AFOREMENTIONED GOODS SOLD AS A UNIT | | | QUICK LOCK WELLHEAD SYSTEM DUHN OIL TOOL, INC.
76281438 28 Jun 2001 | on 16 Dec 2011 | CASING HEADS, TUBING HEADS, WELLHEAD FLANGES, AND ANY COMBINATION OF T... Class 007 Class 007 Machinery Products QUICK LOCK WELL HEAD SYSTEM | | 
