Gau Chen

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Hand stamp with removable die box
- Patent number 10,513,134
- Issue date Dec 24, 2019
- Shanghai Jipushen Office Articles Co., Ltd.
- Gau Chen
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Patents Applicationslast 30 patents

Information Patent Application
Hand Stamp with Removable Die Box
- Publication number 20190381818
- Publication date Dec 19, 2019
- Gau Chen
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS