Assignee

YAO JING JAMES

CA3 patents

Top patents by PatentIndex Score

US8079647B2Dec 20, 2011

Vibratory milling machine having linear reciprocating motion

YAO JING JAMES17 citations79

US8561730B2Oct 22, 2013

Foot valve assembly for a down hole drill

YAO JING JAMES3 citations55

US8056985B2Nov 15, 2011

Vibratory machine

YAO JING JAMES0 citations48