Description: Air filters for mechanical purposes; Back pressure valves as parts of machines; Cylinders for machines; Hydraulic controls for machines, motors and engines; Machine parts, namely, joints and joint parts for connecting sliding strips, plates and guides; Mufflers for motors and engines; Oil filters; Pneumatic controls for machines, motors and engines; Pneumatic piercing machinery and auxiliary supportive devices used in the installation or replacement of utility pipe lines, cable lines, pipe tunnels and underground utility systems; Pneumatic pipe-bursting machinery and auxiliary supportive devices used in the installation or replacement of utility pipe lines, cable lines, pipe tunnels and underground utility systems; Strapping machines; Valves as machine components
