ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,527,407, issued on Jan. 20.
"Lower side bed frame of double-layer iron frame bed" was invented by Luhao Leng (Xiamen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A lower side bed frame of a double-layer iron frame bed comprises two transverse rods, two longitudinal rods, and four columns. An upper end of a lower column comprises a joint section formed by reducing a diameter. An upper column is sleeved on the joint section. An end surface of each of the two transverse rods is connected with a locking piece, and the locking piece abuts outer sides of the upper column and the lower column. An upper bolt enables the locking piece, the upper column,...