Inventor: Madsen, Christian Hald
Inventor: Verhoef, Gijsbertus
Inventor: Madsen, Christian Hald
Inventor: Madsen, Christian Hald
Inventor: Madsen, Christian Hald
Inventor: Madsen, Christian Hald
Inventor: Madsen, Christian Hald
Inventor: Madsen, Christian Hald
Inventor: Durand, James Richard
Inventor: Zlesak, David Charles
Inventor: Madsen, Christian Hald
Inventor: Schuurbiers, Marinus Martinus Hendrikus
Inventor: Madsen, Christian Hald
Inventor: Madsen, Christian Hald
Inventor: Madsen, Christian Hald
Inventor: Wood, Timothy D.
Inventor: Tuite, Jonathan
Inventor: Pellett, Harold M.
Inventor: Davasse, Jean-Paul
Inventor: Wood, Timothy D.