Inventor

Chao li yi

TW3 patents

Patents

3 patents

US10661357B2May 26, 2020

Drill structure

TCT GLOBAL LTD4 citations65

US11890714B2Feb 6, 2024

Remanufacturing method of drill

TCT GLOBAL LTD0 citations38

US10596641B2Mar 24, 2020

Drill structure

TCT GLOBAL LTD0 citations33