Assignee
Inventors
- Yoshio Hamashima (32 patents)
- Kyoji Minami (7 patents)
- Kyozo Kawata (10 patents)
- Teruo Sakamoto (7 patents)
- Toyohiko Takeda (10 patents)
- Yusuke Suzuki (226 patents)
- Masanori Tujikawa (3 patents)
US Patent 4812561 · Granted Mar 14, 1989