Information carrying telephone handset with telephone numbers under plastics view window

摘要

The outer face of handset fitted with view window incorporated in removable shell of transparent plastics, such that they merge into the outer face of the handset. Under the removable shell lies loosely a chit with the telephone numbers. The chit is exchangeable with any arbitrary note, or a photo. The shell rests on the top side of the handset. The shell may surround the handset completely, may be in two parts and may be locked by a snap fit. A slit may permit insertion of the number chit.