Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5353224 | Method for automatically controlling a travelling and cleaning operation of vacuum cleaners | Jang Weon LEE | 1994-10-04 |
| 5307273 | Apparatus and method for recognizing carpets and stairs by cleaning robot | Ki Tae Oh | 1994-04-26 |