Assignee
Inventors
- Nobuyoshi Miyao (5 patents)
- Hirotoshi Matsui (12 patents)
- Nobukazu Isoyama (2 patents)
- Susumu Nonaka (6 patents)
- Masayasu Makino (3 patents)
- Kazuo Suzuki (202 patents)
- Hirokazu Koda (8 patents)
US Patent 4250821 · Granted Feb 17, 1981