Inventor: Kievit, Christa
Inventor: Kievit, Christa
Inventor: Clifton, Richard Paul
Inventor: Moore, Peter R.
Inventor: van der Zwet, Alexius Johannes Joseph
Inventor: Holtrop, Mathilde H.
Inventor: Holtrop, Mathilde H.
Inventor: Crowther, Albert Timothy Alan, Tristram, David Ralph
Inventor: Churchus, John William
Inventor: Alexander, Pauline
Inventor: Burkey, Harold Ivan
Inventor: Burkey, Harold Ivan
Inventor: Burkey, Harold Ivan
Inventor: Lothrop, Chester Harper
Inventor: Michler, Louis A.
Inventor: Chamberlin, Cecil C.