Inventor: Westphal, Friedrich Manfred
Inventor: Westphal, Friedrich Manfred
Inventor: Westphal, Friedrich Manfred
Inventor: Straver, Willem
Inventor: Westphal, Friedrich
Inventor: Westphal, Friedrich
Inventor: Hofmann, Birgit Christa
Inventor: Hofmann, Birgit Christa
Inventor: Hofmann, Birgit Christa