Assignee
Inventors
- Masao Tsujimura (3 patents)
- Masamichi Hirooka (1 patents)
- Unknown
- Takayoshi Morooka (4 patents)
- Masaki Noda (35 patents)
- Mamoru Akiyama (17 patents)
- Nobuaki Murai (4 patents)
- Seiji Yoshikawa (3 patents)
US Patent 4853731 · Granted Aug 1, 1989