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Inventor

LIU QINGYUAN

CN10 patents
⚠️ This page may combine multiple inventors who share the name “LIU QINGYUAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LIU QINGYUAN

4 patents

BAO YAHUA

3 patents

WOODFIELD BRIAN F

1 patent

SMITH INTERNATIONAL

1 patent

MAZAK CORP

1 patent