A structure for mounting an exit sign to a standard wall-mounted electrical junction box. The structure is constituted of a separate plate which is adapted to be fastened to the back cover of an exit sign so as to form a mounting structure adapted for facilitating the attachment of the exit sign to a...http://www.google.se/patents/US6095670?utm_source=gb-gplus-sharePatent US6095670 - Circular mounting plate adapter for attaching an exit sign to a junction box
