Inventor: Geerlings Lommerse, Petronella Maria
Inventor: de Jong, Jacobus Robertus
Inventor: de Jong, Jacobus Robertus
Inventor: Skelton, Donald Alfred
Inventor: Skelton, Donald Alfred
Inventor: Skelton, Donald Alfred
Inventor: de Jong, Jacobus Robertus
Inventor: de Jong, Jacobus Robertus
Inventor: Skelton, Donald
Inventor: Skelton, Donald
Inventor: de Looff, Tonny M.
Inventor: de Looff, Tonny M.
Inventor: Skelton, Donald
Inventor: Skelton, Donald
Inventor: Skelton, Donald
Inventor: Skelton, Donald
Inventor: De Jong, Jacobus Robertus
Inventor: Skelton, Donald
Inventor: de Jong, Jacobus Robertus
Inventor: Oudshoorn, Hubertus Gerardus
Inventor: Oudshoorn, Hubertus Gerardus
Inventor: van Noort, Marco
Inventor: Blay, John William, Blay, Violet Marilyn