Assignee
Inventors
- Mitsuyoshi Aonuma (12 patents)
- Hiroyuki Watanabe (516 patents)
- Haruki Kawada (4 patents)
- Kohkichi Noguchi (7 patents)
- Akio Ueda (58 patents)
- Shuichi Akita (21 patents)
- Tetsuo Ohyama (5 patents)
- Toshio Kase (8 patents)
US Patent 4647625 · Granted Mar 3, 1987