Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6814553 | Dual reciprocating bellows pump, with a pair of interlocking shafts passing through a common pump head and dual pump chambers | Tsuyoshi Watanabe, Toshiki Oniduka | 2004-11-09 |