ALEXANDRIA, Va., April 9 -- United States Patent no. 12,270,249, issued on April 8, was assigned to NORTH STATES INDUSTRIES INC. (Plymouth, Minn.).

"Security gate" was invented by Hua Chen (Zhejiang, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An example security gate can include: an outer frame; an outer gate disposed within the outer frame, the outer gate defining a plane and having a plurality of outer gate vertical members, and the outer gate defining an inner gate opening; an inner gate disposed within the outer gate, the inner gate defining a plurality of inner gate vertical members, wherein the inner gate is configured to move vertically within the plane to control access through the inner ga...