ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,301, issued on Jan. 13, was assigned to BODYFRIEND Co. LTD. (Seoul, South Korea).
"Massage apparatus including arm massage part" was invented by Deok Hyun Kong (Seoul, South Korea), Myeong Jin You (Seoul, South Korea) and Yong Ju Kwon (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a massage apparatus including an arm massage part, the massage apparatus comprising: a frame connection part which connects a buttock frame provided in a main frame and a back frame provided in the main frame, and which rotates about a frame rotation axis on the basis of the movement of the back frame; a driving shaft w...