US Patent 7836618 License plate security frame

A license plate security frame comprises a solid inner back plate that is secured to a vehicle and a outer front rim hinged to it that traps the license plate and covers the mounting screws. Hinges at the bottom allow the inner back plate and outer front rim to open like a clamshell, and a cylinder lock mounted at the top to the outer front rim engages a lock pin mounted to the inner back plate. Clear corner covers are included to protect any stickers on the caged-in license plate, and are attached inside the outer front rim in the appropriate corners. The main surface of the license plate including the license numbers and their background are exposed through the middle of the outer front rim.