Inventor: Grillo, Nicholas
Inventor: Hart, George B.
Inventor: LeDuc, Emile J.
Inventor: Leenders, Matthias
Inventor: Pierson, Paul M.
Inventor: Brownell, Walter D., Brownell, Josephine D.
Inventor: Pierson, Wallace R.
Inventor: Catron, Robert Lee
Inventor: White, Charles N.
Inventor: Hjermind, Christian W.
Inventor: Kallay, Joseph W.
Inventor: Catron, Robert Lee
Inventor: Hart, George B.
Inventor: Catron, Robert Lee