发明名称 |
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摘要 |
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申请公布号 |
US2579330(A) |
申请公布日期 |
1951.12.18 |
申请号 |
USD2579330 |
申请日期 |
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申请人 |
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发明人 |
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分类号 |
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主分类号 |
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代理机构 |
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