Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D302878 | Electric vacuum cleaner | Shigetaka Kimura, Kohichi Hasegawa, Yoshitaro Ishii, Fumio Jyoraku | 1989-08-15 |
| 4809394 | Vacuum cleaner having a blower facility structure | Hisao Suka, Akira Iwao, Kazuhiro Kubota, Yoshitaro Ishii | 1989-03-07 |