ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,668, issued on April 22, was assigned to GNI Co. LTD (South Korea).

"Bolt fastening structure and anti-vibration device including the same" was invented by Chang Su Lim (Hwaseong-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are a bolt fastening structure which is couplable and releasable at one side and includes a fall prevention washer capable of preventing a bolt from falling, and an anti-vibration device including the same. By using an L-shaped bolt having a bent portion, even without assistance from below a substructure such as a grating plate, an operator above the substructure can install an anti-vibration device on ...