Inventor: John M. Garabedian
Inventor: William E. Duffett, Walter W. Knicely, Thomas C. Harcharik
Inventor: William E. Duffett, Walter H. Jessel, Jr., Percy S. Helveston
Inventor: William E. Duffett, Walter H. Jessel, Jr.
Inventor: Frederic W. Anderson
Inventor: Frederic W. Anderson
Inventor: Frederic W. Anderson
Inventor: William E. Duffett, Walter H. Jessel, Jr.
Inventor: Barrie John Machin
Inventor: Frederic W. Anderson
Inventor: Marie S. Sperka
Inventor: David L. Armstrong
Inventor: David L. Armstrong
Inventor: David L. Armstrong
Inventor: David L. Armstrong
Inventor: William E. Duffett, Walter H. Jessel, Jr.