Inventor: Skotak, Jr., Chester
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: Skotak, Jr., Chester
Inventor: Hansen, Hans Andrew
Inventor: Hansen, Hans Andrew
Inventor: Hansen, Hans Andrew
Inventor: Hansen, Hans Andrew
Inventor: Skotak, Chester
Inventor: van der Velden, Josephus Maria
Inventor: de Castro Filho, Estevam Emygdio