Assignee
Inventors
- Hiroshi Matsumura (42 patents)
- Norio Shimamura (9 patents)
- Yasuto Ohta (3 patents)
- Masaru Kawabe (8 patents)
- Makoto Shimizu (128 patents)
- Naoaki Natori (2 patents)
- Naohiko Suzuki (32 patents)
US Patent 5111201 · Granted May 5, 1992