Inventor: van der Velden, Josephus M.
Inventor: Head, William A., Head, Robert H.
Inventor: Schoenmakers, Kees
Inventor: Cornelis, Daniel
Inventor: Berry, James Bryan
Inventor: Berry, James Bryan
Inventor: Berry, James Bryan
Inventor: Berry, James Bryan
Inventor: Van Antwerp, Jim
Inventor: Hunt, Marilyn, Wadsworth, deceased, Grady
Inventor: Bradford, Virginia
Inventor: Ernest D. Williams