Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6261171 | Movable multi-function maintenance apparatus | — | 2001-07-17 |
| 5937907 | Manifold having outlets equally spaced from inlet | — | 1999-08-17 |
| 5788567 | Apparatus for guiding air current of equipment used in clean room | Shieh-Ming Chang, Jun Chen | 1998-08-04 |
| 5724825 | Automatic temperature controlling system | Thomas Chang, Simon Chang | 1998-03-10 |