A sheet of tracing paper is provided with a removable border which is coated with a layer of a pressure-sensitive adhesive for temporarily securing the tracing paper to an underlying surface. The border is defined on the inner edge thereof by a tear line, which may be a series of perforations, to permit...http://www.google.com/patents/US4884826?utm_source=gb-gplus-sharePatent US4884826 - Tracing paper having a removable margin of pressure sensitive adhesive
