Assignee
Inventors
- Gerardus Bernardus Jozef Mulder (19 patents)
- Cornelis Leonardus Gerardus Ham (45 patents)
- Aart Johannes Mateboer (2 patents)
- Nicolaas Bernardus Roozen (16 patents)
- Johannes P. M. Verbunt (6 patents)
US Patent 6326788 · Granted Dec 4, 2001