Inventor: Jamieson, Richard
Inventor: van de Pol, Peter
Inventor: Fulcher, Richard John
Inventor: Ten Have, Theodorus C. L.
Inventor: Madsen, Christian Hald
Inventor: Lambert, Harold
Inventor: Craigie, John Maxwell
Inventor: Madsen, Christian Hald
Inventor: Madsen, Christian Hald
Inventor: Madsen, Christian Hald