ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,218, issued on April 14, was assigned to Xuejun Liu (Xiamen, China).
"Shutter assembly" was invented by Xuejun Liu (Xiamen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A shutter assembly includes at least two first shutter frame strips, at least two second shutter frame strips, and at least two support beams. The first shutter frame strips are detachably provided at a first side of each of the support beams. The second shutter frame strips are detachably provided at a second side of each of the support beams. The first shutter frame strips and the second shutter frame strips are staggered in a length direction of the first support beam. In...