Marsh was working on this project for Harvey Ross , who held U.S. Patent 5,465,213 .
At the time , Jeff Marsh , a St Louis engineer and inventor , had already constructed a prototype book printer that could both photocopy and bind .
engineer was working on this project for Harvey Ross , who held U.S. Patent 5,465,213 .
At the time , Jeff Marsh , a St Louis engineer and inventor , had already constructed a prototype book printer that could both photocopy and bind .