Inventor: Stemkens, Henricus Godefridus Wilhelmus
Inventor: Stemkens, Henricus Godefridus Wilhelmus
Inventor: Hall, Elsie Kazerine
Inventor: Hall, Elsie Kazerine
Inventor: Hall, Elsie Kazerine
Inventor: Maddalena, Grisenti Maria
Inventor: Stemkens, Henricus Godefridus Wilhelmus
Inventor: Koning, Lammert
Inventor: Koning, Lammert
Inventor: Koning, Lammert
Inventor: Koning, Lammert
Inventor: Cevasco, Jr., Robert
Inventor: Gutter, Martien
Inventor: Gutter, Martien
Inventor: Gutter, Martien
Inventor: Koning, Lammert