Assignee
Inventors
- Hiroshi Takano (129 patents)
- Shinichi Takagi (72 patents)
- Kiyokazu Wada (4 patents)
- Sadaichi Konishi (2 patents)
- Nobuo Okumura (14 patents)
- Tomizo Kanaoka (3 patents)
- Kouji Matsuo (69 patents)
US Patent 4734087 · Granted Mar 29, 1988