Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841720 | Roving bobbin exchanging method and apparatus for carrying out roving bobbin exchanging method | Yoshio Kawasaki, Tatutake Horibe, Kenji Sasaki | 1989-06-27 |
| 4838606 | Door guard bar | Tadashi Furubayashi, Hitoshi Fujitani | 1989-06-13 |
| 4831937 | Amusement ride device | — | 1989-05-23 |
| 4826737 | Method of using aluminum alloy as substrate for magnetic discs with enhanced magnetic recording density | Masahiro Tsuchiya, Hideaki Kakita, Reijiro Maruyama, Yoshinobu Okada, Yo Takeuchi | 1989-05-02 |
| 4799353 | Method for piecing rovings and exchange roving bobbins in a ring spinning frame and working machine for carrying out this method | Yoshio Kawasaki, Tatutake Horibe, Kenji Sasaki | 1989-01-24 |