Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5617640 | Level position measuring method, level marking method and level marking apparatus comprising a tube, capable of directly measuring a height | Katsushi Kobayashi | 1997-04-08 |
| 5459933 | Level position measuring method and device | — | 1995-10-24 |
| 5367782 | Level marking method and level marking apparatus | — | 1994-11-29 |