A single-ply of paper in web form continuously forms one-piece statement mailers by first die-cutting appropriate portions of the mailer to form a window for a return envelope, and inset edges for a bang-tail and payment coupon. Non-personalized and personalized information is printed on the single ply...http://www.google.co.uk/patents/US5458284?utm_source=gb-gplus-sharePatent US5458284 - Single-part statement mailer with charge card
