Inventor: Hoekert, Hendrick Cozijn
Inventor: Hoekert, Hendrick Cozijn
Inventor: Hoekert, Hendrick Cozijn
Inventor: Hoekert, Hendrick Cozijn
Inventor: Hoekert, Hendrick Cozijn
Inventor: Schouten, Albert
Inventor: Hollingsworth, Donald
Inventor: Rudolph, Nathan H.
Inventor: Carl George Klehm
Inventor: Carl George Klehm
Inventor: Carl George Klehm
Inventor: Carl George Klehm