Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8657173 | Portable type fastener driving tool | Keiji Yamakawa | 2014-02-25 |
| 7896212 | Portable type fastener driving tool | Keiji Yamakawa | 2011-03-01 |
| 7516841 | Connecting fastener and fastener holder | Keiji Yamakawa | 2009-04-14 |
| 6213697 | Self-cutting expansion anchor | — | 2001-04-10 |