ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,332, issued on Nov. 25.

"Systems and methods for preventing the opening of a door by unauthorized personnel" was invented by David Alexander Guerard (Titusville, N.J.) and Jonathan David Guerard (Titusville, N.J.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems, methods, and apparatus are disclosed involving a door blocking apparatus to reduce a likelihood of, and possibly prevent, opening of a door by unauthorized personnel. The apparatus may be networked in a security system and may be connectable to an online security platform. In a particular embodiment, an embodiment of the invention may include a security system involving a plurality of ...