Assignee
Inventors
- Kenji Mori (200 patents)
- Kazuyoshi Morita (5 patents)
- Shizume Takemoto (2 patents)
- Hisanao Nagasawa (1 patents)
- Yasuhisa Ohtani (2 patents)
- Masashi Matsui (13 patents)
- Sohichi Arai (1 patents)
US Patent 4826818 · Granted May 2, 1989