Inventor: Griffith, Jr., George W.
Inventor: Griffith, Jr., George W.
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.