Inventor: van de Pol, Peter
Inventor: Ten Have, Theodorus C. L.
Inventor: Madsen, Christian Hald
Inventor: Madsen, Christian Hald
Inventor: Madsen, Christian Hald
Inventor: Madsen, Christian Hald
Inventor: van de Pol, Peter
Inventor: Beekenkamp, Annie Cornelia
Inventor: van de Pol, Peter
Inventor: van der Zwet, Alexius Joannes Joseph
Inventor: van der Zwet, Alexius Joannes Joseph
Inventor: Madsen, Christian Hald
Inventor: van der Zwet, Alexius Joannes Joseph
Inventor: van der Zwet, Alexius Joannes Joseph
Inventor: Beekenkamp, Annie Cornelia
Inventor: van der Zwet, Alexius Joannes Joseph
Inventor: Beekenkamp, Annie Cornelia
Inventor: Beekenkamp, Annie Cornelia
Inventor: Bacon, Terry A.
Inventor: Nixon, Arlene E., Malone, Michael T.
Inventor: Nixon, Arlene E., Malone, Michael T.