Inventor: Negley, Sarah J.
Inventor: Montecucco, Edward Virgil
Inventor: Oostveen, Cornelis A.
Inventor: Klemm, Nils, Glawe, Martin
Inventor: Hanes, Mitchell E.
Inventor: Klemm, Nils, Glawe, Martin
Inventor: Barends, Eveline
Inventor: Falstad, III, Clarence H.