IC 007. US 013 019 021 023 031 034 035. G & S: Machines for the reduction and regulation of pressure and replacement parts thereof, namely, ball valves, sealant ball valves of metal, butterfly valves; mechanical, hydraulic and pneumatic valve actuators [, electric operating actuators, namely, hydraulic valve actuators containing a minimal electric component, electromechanical actuators, namely, linear actuators, hydraulic valve actuator, pneumatic valve actuator ]

IC 009. US 021 023 026 036 038. G & S: Scientific, checking and measuring apparatus and instruments for gases and vapours, namely, control apparatus and installations for electrical and electronic means of controlling the operation of moveable equipment and mechanisms, namely, electric valve actuators, automatic valves, pressure relief valves for use in pipelines, ducts and channels; * electric operating actuators, namely, hydraulic valve actuators containing a minimal electric component, electromechanical actuators, namely, linear actuators, hydraulic valve actuator, pneumatic valve actuator *