Patente US4022457 - Sheet folding device - Google PatentesB???squeda Im???genes Maps Play YouTube Noticias Gmail Drive M???s ??Iniciar sesi???n B???squeda avanzada de patentesPatentesA system for progressively folding a sheet as it continuously moves along a feed path from a printer to an envelope inserting station; said system including an arrangement for initially forming longitudinal score line