Inventor: Stemkens, Henricus Godefridus Wilhelmus
Inventor: Stemkens, Henricus Godefridus Wilhelmus
Inventor: Stemkens, Henricus Godefridus Wilhelmus
Inventor: Stemkens, Henricus Godefridus Wilhelmus
Inventor: Stemkens, Henricus Godefridus Wilhelmus
Inventor: Gutter, Martien Everett
Inventor: Gutter, Martien Everett
Inventor: Morrow, Robert William
Inventor: Gutter, Martien Everett
Inventor: Gutter, Martien Everett
Inventor: Gutter, Martien Everett
Inventor: Unger, Michael H.
Inventor: Unger, Michael H.
Inventor: Moolenaar, Alfred Nicol
Inventor: Riley, Rodney J.
Inventor: Whiting, Hubert F.
Inventor: McMaugh, Peter E., Whiting, Hubert F.