8to9.com
Title
中國專利文獻网-失效專利、專利查詢、專利服務、專利技術、專利网
Description
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- 專利,專利服務,專利發明,中國專利,失效專利,專利技術,專利信息,專利成果,Chinese Patent information, intellectual property, sipo, inventions, patents, marks, trademarks, patent searching
Languages
中文 (Chinese)
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