ALEXANDRIA, Va., May 5 -- United States Patent no. 12,617,592, issued on May 5, was assigned to Foshan Changfengpolang trade Co. LTD (Foshan, China).

"Storage box with adjustable air vents" was invented by Rensheng Liang (Foshan, China) and Huiping Ye (Foshan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention discloses a storage box with adjustable air vents, the number or size of the first air vents exposed can be adjusted by rotating the rotary adjustment valve, and the number or size of the second air vents exposed can be adjusted by shifting the sliding adjustment valve, so that the ventilation volume of the air vents at two sides can be changed or even the air vents can be compl...