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Patent applications and USPTO patent grants for Ryu; Sol-Ji.The latest application filed is for "bearing test apparatus for testing durability of bearing".
Patent | Date |
---|---|
Bearing test apparatus for testing durability of bearing Grant 9,714,883 - Lee , et al. July 25, 2 | 2017-07-25 |
Bearing Test Apparatus For Testing Durability Of Bearing App 20160025592 - LEE; Yong Bok ;   et al. | 2016-01-28 |
Cage for rolling bearing Grant 9,121,450 - Lee , et al. September 1, 2 | 2015-09-01 |
Cage For Rolling Bearing App 20140376850 - LEE; Yong Bok ;   et al. | 2014-12-25 |
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