Inventor: Walter H. Jessel, Jr., William E. Duffett
Inventor: Walter H. Jessel, Jr., William E. Duffett
Inventor: Walter H. Jessel, Jr., William E. Duffett
Inventor: Arnold W. Ellis, Herbert Swim
Inventor: Carl George Klehm
Inventor: William A. Warriner
Inventor: William A. Warriner
Inventor: William A. Warriner
Inventor: Kathleen K. Meserve
Inventor: George M. Ruppel
Inventor: Barrie John Machin
Inventor: Walter H. Jessel, Jr., William E. Duffett
Inventor: Walter H. Jessel, Jr., William E. Duffett
Inventor: Walter H. Jessel, Jr., William E. Duffett
Inventor: Walter H. Jessel, Jr., William E. Duffett
Inventor: Walter H. Jessel, Jr., William E. Duffett
Inventor: Armando Valepiano, Sergio Valepiano
Inventor: William A. Warriner
Inventor: William A. Warriner
Inventor: William A. Warriner
Inventor: Dorothy Jean Searles Bailey