Inventor: Engelke, Milton Charles
Inventor: Ito, Minoru, Gurgel, Roberto Guerra Amaral
Inventor: Ito, Minoru, Gurgel, Roberto Guerra Amaral
Inventor: Keeter, Thomas, Hubbard, Agnes
Inventor: Stemkens, Henricus G. W.
Inventor: Stemkens, Henricus G. W.
Inventor: Stemkens, Henricus G. W.
Inventor: Stemkens, Henricus G. W.