Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854833 | Electromagnetically reciprocating apparatus with adjustable bounce chamber | Haruki Nakao, Tamotsu Mori | 1989-08-08 |
| 4838771 | Biasing force adjusting apparatus for electromagnetically driven reciprocating pump | — | 1989-06-13 |