Yanzhao Li

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Wendeng City, CN

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Patents Grantslast 30 patents

Information Patent Grant
Clamping jaw assembly and drill chuck
- Patent number 11,400,526
- Issue date Aug 2, 2022
- SHANDONG WEIDA MACHINERY CO., LTD.
- Yanzhao Li
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Drill chuck
- Patent number 11,198,184
- Issue date Dec 14, 2021
- SHANDONG WEIDA MACHINERY CO., LTD.
- Yanzhao Li
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Locking drill chuck
- Patent number 7,654,539
- Issue date Feb 2, 2010
- Shandong Weida Machinery Co., Ltd.
- Guimo Yang
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Locking drill chuck
- Patent number 6,991,238
- Issue date Jan 31, 2006
- Shandong Weida Machinery Co., Ltd.
- Guimo Yang
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
Drill Chuck
- Publication number 20210197292
- Publication date Jul 1, 2021
- SHANDONG WEIDA MACHINERY CO.,LTD.
- Yanzhao LI
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
CLAMPING JAW ASSEMBLY AND DRILL CHUCK
- Publication number 20210154751
- Publication date May 27, 2021
- Shandong Weida Machinery Co., Ltd.
- Yanzhao LI
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Locking drill chuck
- Publication number 20070013150
- Publication date Jan 18, 2007
- Shandong Weida Machinery Co., Ltd.
- Guimo Yang
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Locking drill chuck
- Publication number 20050023775
- Publication date Feb 3, 2005
- SHANDONG WEIDA MACHINERY CO., LTD.
- Guimo Yang
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR