Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808933 | Rotating speed measuring apparatus having a corrector for low and high speeds using angle and frequency transducers | Sumio Kobayashi, Mutsuo Tokashiki, Tadashi Okawa, Hiroshi Sugai | 1989-02-28 |