Inventor: Geerlings Lommerse, Petronella Maria
Inventor: de Jong, Jacobus Robertus
Inventor: de Jong, Jacobus Robertus
Inventor: Williams, Brian Paul
Inventor: Williams, Brian Paul
Inventor: Williams, Brian Paul
Inventor: Williams, Brian Paul
Inventor: de Jong, Jacobus Robertus
Inventor: de Jong, Jacobus Robertus
Inventor: Strode, Ty Richard
Inventor: De Jong, Jacobus Robertus
Inventor: de Jong, Jacobus Robertus
Inventor: Oudshoorn, Hubertus Gerardus