Inventor: Ault, James Robert
Inventor: Ault, James Robert
Inventor: Jacobs, Henricus Cornelius Maria
Inventor: Jensen, Bent Juhl
Inventor: Pieters, Luc, De Meyer, Caroline
Inventor: Pieters, Luc, De Meyer, Caroline
Inventor: Pieters, Luc, De Meyer, Caroline
Inventor: Skotak, Jr., Chester
Inventor: Skotak, Jr., Chester
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: Bak, Elly, Steur, Nicolaas D. M.