Inventor: Marion M. Dropinski
Inventor: Arnold W. Fischer
Inventor: Barrie John Machin
Inventor: Barrie John Machin
Inventor: William A. Warriner
Inventor: William A. Warriner
Inventor: Arnold W. Fischer
Inventor: Arnold W. Fischer
Inventor: Arnold W. Fischer
Inventor: Arnold W. Fischer
Inventor: Barrie John Machin
Inventor: Walter H. Jessel, Jr., William E. Duffett
Inventor: William A. Warriner
Inventor: William Pomeroy Thomson
Inventor: Jack S. Sweet, Walter H. Jessel, William E. Duffett
Inventor: Franklin Andrew Gilbert
Inventor: Herbert S. Mason
Inventor: William J. Skou, Walter W. Knicely, William E. Duffett
Inventor: Walter H. Jessel, Jr., Wm. E. Duffett