Inventor: Madsen, Christian Hald
Inventor: Freyre, Rosanna
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: Freyre, Rosanna
Inventor: van der Velden, Josephus M.
Inventor: Freyre, Rosanna
Inventor: Madsen, Christian Hald
Inventor: Madsen, Christian Hald
Inventor: Madsen, Christian Hald
Inventor: Madsen, Christian Hald
Inventor: Schoenmakers, Kees
Inventor: Cornelis, Daniel
Inventor: Grant, Greg, Hubbard, Agnes
Inventor: Bradford, Virginia
Inventor: McGuire, Orvid E.
Inventor: Barcafer, Ellis H.