Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D498383 | Timer tea maker | Richard Chang, Michael Crowley | 2004-11-16 |
| 6805040 | Tea maker | Richard Chang, Michael Crowley | 2004-10-19 |
| 6802246 | Timer tea maker | Richard Chang, Michael Crowley | 2004-10-12 |