Inventor: Sierra, Richard
Inventor: van der Velden, Josephus M.
Inventor: Hall, Elsie Kazerine
Inventor: Hall, Elsie Kazerine
Inventor: Hall, Elsie Kazerine
Inventor: Saul, Richard G.
Inventor: Koning, Lammert
Inventor: Koning, Lammert
Inventor: Koning, Lammert
Inventor: Koning, Lammert
Inventor: Cevasco, Jr., Robert
Inventor: Schoenmakers, Kees
Inventor: Koning, Lammert
Inventor: Nobbmann, Luder
Inventor: Cornelis, Daniel