Inventor: Bautista, Rodolfo Valdoz
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: Hansen, Hans Andrew
Inventor: Hansen, Hans Andrew
Inventor: Hansen, Hans Andrew
Inventor: Bautista, Rodolfo Valdoz
Inventor: Bautista, Rodolfo Valdoz
Inventor: Elfers, Elke, Elfers, Urusla
Inventor: Venecourt, Gail Margaret Littlejohn
Inventor: Griesbach, Robert, Meyer, Fred