He is also responsible for launching two book trading companies, first in 1475 and then in 1480, under the name of Johannes de Colonia, Nicolaus Jenson et socii.
He is also responsible for launching two book trading companies under the name of Johannes de Colonia. He is also responsible for launching first in 1475 under the name of Johannes de Colonia. He is also responsible for launching then in 1480, under the name of Johannes de Colonia. Johannes de Colonia is Nicolaus Jenson et socii.