Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5461852 | Chain and Connecting pin thereof | — | 1995-10-31 |
| 5067931 | Sprocket wheel having replaceable teeth | Seitaro Ueda | 1991-11-26 |
| 5056651 | Flight for collecting sludge by sweeping and roller shoe fixed thereto | — | 1991-10-15 |