Inventor: Hildebrant, Jr., Charles A.
Inventor: Goffreda, Joseph C., Voordeckers, Anna M.
Inventor: Apps, Darrel A.
Inventor: Benardella, Frank
Inventor: Orton, Elwin R., Gant, David A.
Inventor: Orton, Elwin R., Gant, David A.
Inventor: Coddington, Lyman B.