ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,971, issued on March 17, was assigned to TONAND INC. (London, Canada).

"Hydraulic device with case drain system" was invented by Antonio Cannata (London, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A hydraulic device comprising: a housing having an inlet for receiving hydraulic fluid and an outlet for outputting the hydraulic fluid, the housing having a case area for holding case fluid; a primary cylinder positioned in the housing along a first reciprocation axis, the primary cylinder in fluid communication with the inlet for receiving the hydraulic fluid on a primary intake stroke and in fluid communication with the outlet for ejecting t...