Inventor
CHEN CHENGZHONG
CN5 patents
⚠️ This page may combine multiple inventors who share the name “CHEN CHENGZHONG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
POSITEC POWER TOOLS SUZHOU CO
4 patentsUS7882900B2Feb 8, 2011
Power tool with signal generator
POSITEC POWER TOOLS SUZHOU CO82 citations97
US7882899B2Feb 8, 2011
Power tool having control system for changing rotational speed of output shaft
POSITEC POWER TOOLS SUZHOU CO91 citations97
US7900715B2Mar 8, 2011
Variable speed tool and variable speed control method
POSITEC POWER TOOLS SUZHOU CO46 citations91
US7195547B2Mar 27, 2007
Dual plate sander
POSITEC POWER TOOLS SUZHOU CO1 citations49