Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5627610 | Self-locking nut for eye glasses having an unthreaded hole with vertical channels | Ryuichi Ohtsuki, Masahiro Ohara | 1997-05-06 |
| 5508758 | Self-locking nut with threaded and self-locking members, useful for eye glasses, and a nut tightener and a nut supplier for same | Ryuichi Ohtsuki, Masahiro Ohara | 1996-04-16 |