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求助：两篇专利
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请问哪位大虾能帮我查找这两篇专利：JP, 4897858 1973-12-13 和 US, 3272879, 1966-09-13 [search]求专利[/search] [ Last edited by darliu on 2008-1-9 at 20:03 ] |
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2楼2008-01-10 08:52:37
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