Inventor: Walter H. Jessel, Jr., William Erwin Duffett
Inventor: Walter E. Lammerts
Inventor: James W. Hines, Jr.
Inventor: Walter E. Lammerts
Inventor: Walter E. Lammerts
Inventor: James W. Hines, Jr.
Inventor: Walter H. Jessel, Jr., William E. Duffett
Inventor: William E. Duffett, Walter W. Knicely
Inventor: James W. Hines, Jr.
Inventor: James W. Hines, Jr.
Inventor: Walter E. Lammerts
Inventor: Calvin L. Cooper
Inventor: James W. Hines, Jr.
Inventor: Folke S. Olsson