Inventor: Hoekert, Hendrick Cozijn
Inventor: Hoekert, Hendrick Cozijn
Inventor: Kapiteijn, Antonius Simon Johannes
Inventor: Kapiteijn, Antonius Simon Johannes
Inventor: Skelton, Donald Alfred
Inventor: Skelton, Donald Alfred
Inventor: Skelton, Donald Alfred
Inventor: Skelton, Donald
Inventor: Kapiteijn, Anthonius Simon Johannes
Inventor: Kapiteijn, Anthonius Simon Johannes
Inventor: Klaver, Theo C. M.
Inventor: Skelton, Donald
Inventor: Skelton, Donald
Inventor: Kapiteijn, Anthonius Simon-Johannes
Inventor: Skelton, Donald
Inventor: Skelton, Donald
Inventor: Skelton, Donald
Inventor: Hoekert, Hendrick Cozijn
Inventor: Hoekert, Hendrick Cozijn
Inventor: Hoekert, Hendrick Cozijn
Inventor: Skelton, Donald
Inventor: Kapiteijn, Antonius S. J.
Inventor: Kapiteijn, Antonius S. J.
Inventor: Heims, Daniel M., Patterson, Frank