Inventor: Egger, Donald L.
Inventor: Spaans, Jaap P.
Inventor: Hoff, Petrus Mattheus Maria
Inventor: Mak, Nicolaas Aloysius Maria
Inventor: Egger, Donald L., Pankiewicz-Leap, Teresa
Inventor: Egger, Donald L., McRae, Edward A.
Inventor: Egger, Donald L., Pankiewicz-Leap, Teresa