专利
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www.cnpatent.com - 2011-08-09
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www.lingdunwang.com - 2011-08-09
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www.patent.com.cn - 2011-08-09
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www.cnpat.com.cn - 2011-08-09
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www.795.com.cn/zl - 2011-08-08
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www.wanfangdata.com.cn - 2011-07-16
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www.weiquan365.com - 2011-07-14
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www.21etm.com - 2011-07-11
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ip.people.com.cn - 2011-07-11