Assignee
Inventors
- Yoshimasa Machida (42 patents)
- Isao Saito (78 patents)
- Isao Sugiyama (24 patents)
- Shigeto Negi (38 patents)
- Seiichiro Nomoto (32 patents)
- Hironori Ikuta (28 patents)
- Hiroshi Yamauchi (17 patents)
- Kyosuke Kitoh (25 patents)
US Patent 4468394 · Granted Aug 28, 1984