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Inventor
CAI MINGQUAN
CN
2 patents
⚠️ This page may combine multiple inventors who share the name “CAI MINGQUAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SHANDONG WEIDA MACH CO LTD
1 patent
US7249770B2
Jul 31, 2007
Locking drill chuck
SHANDONG WEIDA MACH CO LTD
15 citations
79
SHANDONG WEIDA MACHINE TOOL TO
1 patent
US6247705B1
Jun 19, 2001
Manual tightened chuck
SHANDONG WEIDA MACHINE TOOL TO
13 citations
59