Inventor: Konst, Johannes Wilhelmus Maria
Inventor: Konst, Johannes Wilhelmus Maria
Inventor: Koekkoek, Arthur N. J.
Inventor: Jacobs, Henricus Cornelius Maria
Inventor: Koekkoek, Arthur N. J.
Inventor: Koekkoek, Arthur N. J.
Inventor: Konst, Johannes Wilhelmus Maria
Inventor: Konst, Johannes Wilhelmus Maria
Inventor: Konst, Johannes Wilhelmus Maria