Assignee
Inventors
- Michio Suzuki (92 patents)
- Masao Kawamura (15 patents)
- Kunioki Kato (10 patents)
- Masahide Takahashi (5 patents)
- Tsuyoshi Morishita (19 patents)
- Kazuyuki Nakayama (7 patents)
- Akio Nakatsuka (2 patents)
US Patent 4835317 · Granted May 30, 1989