Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6745459 | Heat exchanging tube assembling apparatus for heat exchanger and assembling method thereof | Yoshiharu Tokunaga, Tadashi Washizuka, Shoichi Okisawa, Takio Ichimura | 2004-06-08 |
| 6389682 | Heat exchanging tube assembling apparatus for heat exchanger and assembling method thereof | Yoshiharu Tokunaga, Tadashi Washizuka, Shoichi Okisawa, Takio Ichimura | 2002-05-21 |
| 5996217 | Heat exchanging tube assembling apparatus for heat exchanger and assembling method thereof | Yoshiharu Tokunaga, Tadashi Washizuka, Shoichi Okisawa, Takio Ichimura | 1999-12-07 |