ENVELOPE HAVING OPENING AT POSTAGE STAMP ATTACHING AREA AND ADDRESS AREA AND METHOD OF MANUFACTURING IT

摘要

PROBLEM TO BE SOLVED: To solve the problem that an infringement of copyright occurs often when a person who places an order cancels the order based on a product delivered as a sample temporarily and after that uses it partly in a designer business such as a service mark or designing or the like. SOLUTION: An open window is provided separately at each of the postage stamp attaching area and the address area of an envelope or is provided at an unified area of the postage stamp attaching area and the address area to utilize a predetermined document needed as a dating certificate and a stamped date on a postage stamp as a postage charge. COPYRIGHT: (C)2003,JPO