 It continued in business as a subsidiary of MAN, and the Gräf & Stift name remained in use as a MAN brand for the Austrian market and for trolleybuses until 2001, when ÖAF-Gräf & Stift AG was renamed MAN Sonderfahrzeuge AG.It was located in Vienna, and the production facilities continue in use there, but no longer using the Gräf & Stift name.The Gräf brothers started a bicycle service workshop in Vienna in 1893, quickly branching out into bicycle manufacturing.