Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872124 | Length measuring device | Toshiharu Okuyama, Yoshio Wakatsuki | 1989-10-03 |
| 4852264 | Distance measuring device with transmitter | Toshiharu Okuyama, Yoshio Wakatsuki | 1989-08-01 |