Inventor

CHEN YUNZHAO

CN2 patents

⚠️ This page may combine multiple inventors who share the name “CHEN YUNZHAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KELAMAYI KING BULL INFORTEC PETROLEUM EQUIPMENT CO LTD

1 patent

US9958074B2May 1, 2018

Valve seat ring and multi-way valve having valve seat ring

KELAMAYI KING BULL INFORTEC PETROLEUM EQUIPMENT CO LTD7 citations74

WUHU KING BULL INFORTEC PETROLEUM EQUIPMENT CO LTD

1 patent

US10323756B2Jun 18, 2019

Multi-way valve

WUHU KING BULL INFORTEC PETROLEUM EQUIPMENT CO LTD3 citations61