Martin Crantz (or sometimes Krantz) of the three, including Ulrich Gering and Michael Friburger, that set up a press at the Sorbonne in 1470 was likely the fellow who had the technical know how how
Martin Crantz (or sometimes Krantz) of the three, including Ulrich Gering and Michael Friburger, that set up a press at the Sorbonne in 1470 was likely the fellow who had the technical know how how