Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5686893 | Water leakage detecting apparatus of water purifier | — | 1997-11-11 |
| 5676824 | Water purifier with means for indicating when filter replacement is due and for automatically initiating a membrane washing step | Moon-Hyun Cho, Sun-Yong Choi, Keun-Ho Lee, In-Seog Chung | 1997-10-14 |