Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6499374 | Ball screw with alternately disposed steel balls and ceramic balls | — | 2002-12-31 |
| 6415676 | Ball screw device having spacers | Hirouyki Takagi, Hidemi Horimoto | 2002-07-09 |