Inventor: van Heesbeen, Ad
Inventor: van Heesbeen, Ad
Inventor: Stemkens, Henricus Godefridus Wilhelmus
Inventor: Danziger, Gavriel
Inventor: Oostveen, Cornelis A.
Inventor: Babikow, Paul David
Inventor: Jones, Sidney James, Jones, David James
Inventor: Falstad, III, Clarence H.
Inventor: Falstad, III, Clarence H.
Inventor: Jones, Sidney James, Jones, David James
Inventor: van Aart, Marinus Adrianus Cornelis
Inventor: Jones, Sidney James, Jones, David James
Inventor: Jones, Sidney James, Jones, David James