Inventor: Rijnbeek, Anthonius Phillipus Maria
Inventor: Rijnbeek, Anthonius Phillipus Maria, de Jong, Kitty
Inventor: de Kroon, Marnix
Inventor: Hoekstra-Arisz, Catharina Marie
Inventor: Zonneveld, Piet
Inventor: Stemkens, Henricus G. W.
Inventor: Stemkens, Henricus G. W.
Inventor: Stemkens, Henricus G. W.
Inventor: Stemkens, Henricus G. W.
Inventor: Stemkens, Henricus G. W.
Inventor: Stemkens, Henricus G. W.
Inventor: Stemkens, Henricus G. W.
Inventor: Stemkens, Henricus G. W.
Inventor: Jonkers, Johanna B.
Inventor: Jonkers, Johanna B.
Inventor: Jonkers, Johanna B.
Inventor: Jonkers, Johanna B.
Inventor: Jonkers, Johanna B.
Inventor: Jonkers, Johanna B.