Assignee
Inventors
- Leonardus Johannes Hubertus Erkens (9 patents)
- Gregor Schmitt (4 patents)
- Hendrikus Maria Anna Hamers (3 patents)
- Johannes Maria Martinus Luijten (3 patents)
- Jozef Gertruda Emanuel Mains (3 patents)
US Patent 5976238 · Granted Nov 2, 1999