ALEXANDRIA, Va., June 19 -- United States Patent no. 12,334,577, issued on June 17, was assigned to Milwaukee Electric Tool Corp. (Brookfield, Wis.).

"Mobile power supply" was invented by Maria Krutikova (Wauwatosa, Wis.), Max Karbin (Milwaukee) and Anthony Graykowski (Belgium, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A mobile power supply includes a frame, at least one battery pack supported by the frame, a clamp assembly coupled to the frame, and a handle removably attached to the frame. The handle has two elongate members that are spaced apart from one another and a cross-member extending between the two elongate members. The clamp assembly is configured to capture the cross-member with the han...