ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,778,305, issued on Nov. 3.
"Bunk bed" was invented by James Chen (City of Industry, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A bunk bed frame includes a lower bed frame and an upper bed frame. The lower bed frame and the upper bed frame both have four corner legs and at least one pair of middle legs. A rectangular configuration is adapted for a full size mattress. The corner legs and middle legs providing support for the mattress. A middle leg lap vertical splice joint connects the pair of middle legs. The middle leg lap vertical splice joint includes a first lap connection on the upper end of the lower middle leg, a second lap connection on...