Bernard H Pietenpol built two early single-place, open cockpit biplanes, one powered by a 50hp Gnôme rotary engine and the second, in 1923, powered with a Ford Model T.
1980: B.H. Pietenpol, Spring Valley, MN 55975, USA
1995: 1604 Meadow Circle S.E., Rochester, MN 55904-5251, USA.
All Aero 