Inventor: de Ruiter, Hendrik Marinus
Inventor: Smith, Donald Robert
Inventor: Smith, Donald Robert
Inventor: Smith, Donald Robert
Inventor: Olaf Soenderhousen
Inventor: Herbert C. Swim, O. L. Weeks
Inventor: David L. Armstrong
Inventor: David L. Armstrong
Inventor: John W. Patterson
Inventor: Barnell L. Cobia
Inventor: Marie Louise Meilland
Inventor: John W. Patterson
Inventor: Barnell L. Cobis
Inventor: Lloyd S. Magnuaon
Inventor: Herbert C. Swim, O. L. Weeks
Inventor: Marie Louise Meilland
Inventor: Barnell L. Cobia
Inventor: Walter E. Lammerts