Inventor: Greyvenstein, Ockert F. C.
Inventor: Stemkens, Henricus Godefridus Wilhelmus
Inventor: Membrey, Stephen, Jackson, Bryan
Inventor: Stemkens, Henricus G. W.
Inventor: Unger, Christiaan
Inventor: Stevenson, John
Inventor: Meadows, Jr., Thomas Dennis, Berry, James Bryan
Inventor: Corley, Will Lee
Inventor: Ritchie, John Stanley, Ritchie, Kathleen Anne
Inventor: Berry, James Bryan