Heinrich Heitmanns company built his fourth monoplane as a Grade-like with a Delfosse engine. According to “Motorwagen” 1911, it flew successfully on the Wandsbecker Exerzierplatz.
Heitmann Typ IV Eindecker
Heinrich Heitmanns company built his fourth monoplane as a Grade-like with a Delfosse engine. According to “Motorwagen” 1911, it flew successfully on the Wandsbecker Exerzierplatz.
All Aero 