ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,545, issued on June 17, was assigned to Vladimir Malin (Detroit).

"Shelf assembly with hidden compartment and multi-stage lock" was invented by Vladimir Maliy (Detroit) and Alexander Zelikov (Farmington Hills, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A shelf assembly includes a receptacle having first, second, third, and fourth lateral sides and a receptacle floor defining a compartment. The shelf assembly also includes a shelf configured to engage the receptacle at the second and third lateral sides and slide along the second and third lateral sides between a closed position to thereby cover and hide the compartment and an open position...