Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5513417 | Silencing device for vacuum cleaner | Jong Su Choi | 1996-05-07 |
| 5515340 | Ultrasonic sensor scanning apparatus and method for detecting objects by use of the scanning apparatus | Jang-Hyun Yu | 1996-05-07 |
| 5440216 | Robot cleaner | — | 1995-08-08 |
| 5438247 | Ultrasonic sensor scanning apparatus and method for detecting objects by use of the scanning apparatus | Jang-Hyun Yu | 1995-08-01 |