ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,550, issued on Nov. 11, was assigned to RPM INDUSTRIES LLC (Washington, Pa.).

"Devices, systems, and methods for relieving and regulating pressure during the performance of a fluid service on a machine" was invented by John K. Apostolides (Wexford, Pa.) and William E. Ryckman (Coal Center, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A valve assembly configured to perform a fluid service on a machine is disclosed herein. The valve assembly can include an inlet/outlet port fluidically coupling a fluid component to an internal cavity defined by the valve assembly, a filter port fluidically coupling the internal cavity to a filter of the machine,...