Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6351886 | Method of manufacturing a speed gear | — | 2002-03-05 |
| 6343497 | Method of manufacturing a speed gear and an apparatus for manufacturing a speed gear | — | 2002-02-05 |
| RE34752 | Alkaline battery with a nickel electrode | Masahiko Oshitani, Hiroshi Yufu | 1994-10-04 |