Inventors:
Wilhelm Rademacher - Limburgerhof,
John Harden - Raleigh NC,
Dan Westberg - Cary NC,
Joseph Zawierucha - Cary NC,
Thomas Holt - Holly Springs NC,
Hendrik Ypema - Cary NC,
Ted Bardinelli - Durham NC,
Albert Everson - Cary NC,
Edson Begliomini - Sao Paulo,