Inventor: Geerlings Lommerse, Petronella Maria
Inventor: de Jong, Jacobus Robertus
Inventor: de Jong, Jacobus Robertus
Inventor: Ault, James Robert
Inventor: Ault, James Robert
Inventor: Ault, James Robert
Inventor: Ault, James Robert
Inventor: Ault, James Robert
Inventor: Hansen, Hans Andrew
Inventor: Ault, James Robert
Inventor: Ault, James Robert
Inventor: Hansen, Hans Andrew
Inventor: de Jong, Jacobus Robertus
Inventor: de Jong, Jacobus Robertus
Inventor: Hansen, Hans Andrew
Inventor: Hansen, Hans Andrew
Inventor: Hansen, Hans Andrew
Inventor: De Jong, Jacobus Robertus
Inventor: de Jong, Jacobus Robertus