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date:2003/6/10 10:43:45
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中华人民共和国国家知识产权局授权浙江001数码通讯有限公司适用于软交换技术的网络可视电话专利权,专利号为zl 02 2 46227.9,专利有效期限为十年。专利证书随后公布。
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