Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7019896 | Polar-axis telescope and equatorial telescope mount including the same | Satoru Nemoto | 2006-03-28 |
| 6515806 | Eyepiece attachment structure for observation optical instrument | — | 2003-02-04 |
| 6424462 | Binocular and method for manufacturing the same | Ken Hirunuma, Shinji Tsukamoto | 2002-07-23 |
| 6307673 | Focusing device of binocular | Ken Hirunuma, Shinji Tsukamoto | 2001-10-23 |
| D439918 | Zoom eyepiece | Kenjiro Yamaguchi | 2001-04-03 |