Inventor: Holtkamp, Sr., Hermann
Inventor: Holtkamp, Sr., Hermann
Inventor: Fischer, Arnold W.
Inventor: Holtkamp, Reinhold
Inventor: Holtkamp, Reinhold
Inventor: Holtkamp, Reinhold
Inventor: Holtkamp, Reinhold
Inventor: Holtkamp, Reinhold
Inventor: Holtkamp, Reinhold
Inventor: Holtkamp, Reinhold
Inventor: Fischer, Arnold W.
Inventor: Holtkamp, Reinhold
Inventor: Holtkamp, Reinhold
Inventor: Holtkamp, Reinhold
Inventor: Holtkamp, Reinhold
Inventor: Holtkamp, Reinhold
Inventor: Holtkamp, Reinhold