| 8172932 |
Connecting tube having dust sensing function for use in vacuum cleaner |
Jang-keun Oh, Min-ha Kim, Jung-gyun Han, Seung-Yong Cha |
2012-05-08 |
| 7717973 |
Cyclone dust-separating apparatus of vacuum cleaner |
Jang-keun Oh, Tak-soo Kim, Young Jun Cho |
2010-05-18 |
| 7640625 |
Vacuum cleaner |
Jang-keun Oh, Seung-Yong Cha |
2010-01-05 |
| 7637973 |
Vacuum cleaner in which a dust bag or a cyclone dust collecting apparatus is selectively mounted |
Jang-keun Oh, Seung-Yong Cha |
2009-12-29 |
| 7611558 |
Dust compressing apparatus of vacuum cleaner |
Jang-keun Oh, Seung-Yong Cha |
2009-11-03 |
| 7562414 |
Dust sensing unit for use in vacuum cleaner |
Jang-keun Oh, Min-ha Kim, Jung-gyun Han, Seung-Yong Cha |
2009-07-21 |
| 6598238 |
Jaw protecting apparatus of helmet |
Wan-Ki Hong, Kwang-Moon Choi, Jung Hwan Park |
2003-07-29 |
| 5953787 |
Suction globe of a vacuum cleaner |
— |
1999-09-21 |
| 4599823 |
Flea catcher |
— |
1986-07-15 |
