ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,139, issued on April 14, was assigned to YANMAR HOLDINGS Co. LTD. (Osaka, Japan).

"Construction machine attachment mounting and demounting apparatus and construction machine equipped with same" was invented by Kiyoshi Yonekura (Fukuoka, Japan), Masami Miyanishi (Fukuoka, Japan) and Yuta Makino (Fukuoka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An attachment mounting and demounting apparatus includes: a fixed frame that has a first hook; a movable frame that has a second hook and is rotatably provided to the fixed frame; a first hydraulic cylinder that rotates the movable frame relative to the fixed frame; a back locking member provided ...