NORRISEAL-WELLMARK, INC

Description: Class 6: [Metal flanges]
Class 7: Chemical injection pumps used to inject chemicals into a line under pressure
Class 9: Liquid level indicators, liquid level control float switches, level switches, gas and liquid pressure regulators for use in the production of oil and gas, control valves for controlling oil and gas production processes, line blinds used to separate different fluids flowing through a common line at different times, lever operated valves, float levers, check valves, fuel gas shut-off valves, pressure relief valves for over pressure protection of vessels used in the oil and gas industry, meter leveling saddles, level glasses and pressure indicating plugs for flow lines and pressure vessels

Description: Class 6: Externally-mounted chambers and domes for use with liquid level switches or liquid level controllers, namely, metal storage tanks for oil and gas
Class 7: Pressure regulators being parts of machines; check valves as parts of machines; butterfly valves being parts of machines; pneumatic and hydraulic valve actuators
Class 9: Safety valves being pressure relief valves for oil and gas facilities; automatic control valves; automatic liquid level control machines; liquid level switches for monitoring and controlling liquids in tanks and vessels; pressure controllers for controlling the pressure of liquid, semi-liquid, and gaseous substances in industrial processes; liquid level gauges; electric valve actuator
Class 11: Pressure regulators for gas pipes and lines

Description: Class 6: Externally-mounted chambers and domes for use with liquid level switches or liquid level controllers, namely, metal storage tanks for oil and gas
Class 7: Pressure regulators being parts of machines; check valves as parts of machines; butterfly valves being parts of machines; pneumatic and hydraulic valve actuators
Class 9: Safety valves being pressure relief valves for oil and gas facilities; automatic control valves; automatic liquid level control machines; liquid level switches for monitoring and controlling liquids in tanks and vessels; pressure controllers for controlling the pressure of liquid, semi-liquid, and gaseous substances in industrial processes; liquid level gauges; electric valve actuator
Class 11: Pressure regulators for gas pipes and lines

Description: Class 7: Chemical injection pumps used to inject chemicals into a line under pressure; gas and liquid pressure regulators being parts of machines used in the production of oil and gas; parts of oil and gas well machines, namely, lever operated valves, float levers, check valves, shut off valves
Class 9: Oil and gas well instrumentation for controlling pressure or liquid levels for surface production, namely, Liquid level indicators, liquid level control float switches, level switches, automatic control valves for controlling oil and gas production processes, pressure relief valves for over pressure protection of vessels used in the oil and gas industry

Description: Class 7: Chemical injection pumps used to inject chemicals into a line under pressure; gas and liquid pressure regulators being parts of machines used in the production of oil and gas; parts of oil and gas well machines, namely, lever operated valves, float levers, check valves, shut off valves
Class 9: Oil and gas well instrumentation for controlling pressure or liquid levels for surface production, namely, Liquid level indicators, liquid level control float switches, level switches, automatic control valves for controlling oil and gas production processes, pressure relief valves for over pressure protection of vessels used in the oil and gas industry
Class 11: Pressure regulators for gas installations, gas and liquid pressure regulators for use in the production of oil and gas