Inventor

TONG XUEBIAO

CN3 patents

Patents

3 patents

US10166609B2Jan 1, 2019

Self-locking drill chuck

ZHEJIANG SANOU MACHINERY CO LTD2 citations62

US11786979B2Oct 17, 2023

Strength-boosting drill chuck

ZHEJIANG SANOU MACHINERY CO LTD0 citations44

US11458547B2Oct 4, 2022

Self-locking drill chuck

ZHEJIANG SANOU MACHINERY CO LTD0 citations39