Inventor: Verhoef, Gijsbertus
Inventor: Kraan, Kees Jan
Inventor: Kraan, Kees Jan
Inventor: Hooijman, Aloysius A. J.
Inventor: Hooijman, Aloysius A. J.
Inventor: Kraan, Kees Jan
Inventor: Verhoef, Gijsbertus
Inventor: Kolster, Hendrik
Inventor: Kraan, Kees Jan
Inventor: Kraan, Kees Jan
Inventor: Kraan, Kees Jan
Inventor: Hooijman, Aloysius A. J.
Inventor: Verhoef, Gijsbertus
Inventor: Hooijman, Aloysius A. J.
Inventor: Hooijman, Aloysius A. J.
Inventor: Hooijman, Aloysius A. J.
Inventor: Kolster, Peter Rudolf
Inventor: Hooijman, Aloysius A. J.
Inventor: Hooijman, Aloysius A. J.
Inventor: Hooijman, Aloysius A. J.
Inventor: Kolster, Peter Rudolf
Inventor: Hooijman, Aloysius A. J.
Inventor: Hooijman, Aloysius A. J.
Inventor: van der Kraan-Zonderland, Maria Francisca Theresia