Inventor: Ault, James Robert
Inventor: Ault, James Robert
Inventor: van Heesbeen, Ad
Inventor: van Heesbeen, Ad
Inventor: Jacobs, Henricus Cornelius Maria
Inventor: Stemkens, Henricus Godefridus Wilhelmus
Inventor: Jensen, Bent Juhl
Inventor: Babikow, Paul David
Inventor: Kristiansen, Kell
Inventor: Beekenkamp, Annie Cornelia
Inventor: Beekenkamp, Annie Cornelia
Inventor: Beekenkamp, Annie Cornelia
Inventor: Ault, James Robert, Thomas, Catherine S.
Inventor: Jensen, Bent Juhl
Inventor: Jensen, Bent Juhl
Inventor: van Heesbeen, Adrianus
Inventor: Niederlander, Andreas
Inventor: Hooijman, Aloysius A. J.