ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,723,463, issued on Sept. 1, was assigned to Murata Machinery Ltd. (Kyoto, Japan).

"Article shelf" was invented by Yoshiyuki Hayami (Inuyama, Japan), Satoshi Maeno (Inuyama, Japan) and Minehiro Tahara (Inuyama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "To prevent two frontages from being simultaneously opened on lower sides thereof, a rack includes a shelf, a first frontage, a second frontage, and a shutter. The shelf can hold an article at a position spaced from a floor surface. The first and second frontages face each other to access to the shelf. The shutter opens one of the two frontages and closes the other. When moving to switch the fron...