Jingfeng Gao

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Beijing 100074, CN

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Patents Grantslast 30 patents

Information Patent Grant
Long afterglow phosphor and a process for the preparing thereof
- Patent number 5,885,483
- Issue date Mar 23, 1999
- Qinglong Hao
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...