Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7171838 | Method and apparatus for producing thin walled tubular product with thick walled flange | — | 2007-02-06 |
| 7168284 | Method and apparatus for producing hollow rack bar and mandrel used for rack bar production | — | 2007-01-30 |
| 6575009 | Mandrel insertion type metal forming of rack bar | — | 2003-06-10 |
| 5988590 | Ball valve element and method of manufacturing a ball valve element | — | 1999-11-23 |