7
parts of machines and/or aircraft engines, namely, radiators for cooling of engine oil and manual low pressure and high pressure valves
9
aircraft and aerospace control and monitoring apparatus, devices and instruments, namely, automatic low-pressure valves, high-pressure valves, fuel control valves, air, fuel and hydraulic valves, relief control valves, drain control valves, solenoid valves and temperature control valves all featuring manual backup operation; electric and hydraulic actuators; hydraulic cylinder and piston units for actuation of a variety of mecahancial components, pneumatic control cylinders, air door actuation cylinders; fire shutt off valves, aircraft pilot control stick grips with switch controls thereon, light barriers comprising a light source and a light sensor for providing an electrical signal upon interruption of the light beam, photelectic daylight switches, arc detectors for high tension power switches, sensor; conveyor control apparatus and pull-rope emergency switches
37
maintenance and repair of aircraft