Wenzhang Qiao

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Patents Grantslast 30 patents

Information Patent Grant
Drill chuck
- Patent number 9,744,601
- Issue date Aug 29, 2017
- Shandong Weida Machinery Co., Ltd.
- Wenzhang Qiao
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
DRILL CHUCK
- Publication number 20150165529
- Publication date Jun 18, 2015
- Shandong Weida Machinery Co., LTD
- Wenzhang Qiao
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR