发明名称 |
Filter |
摘要 |
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申请公布号 |
US2115232(A) |
申请公布日期 |
1938.04.26 |
申请号 |
US19350031317 |
申请日期 |
1935.07.15 |
申请人 |
PFLANZ ERNST L |
发明人 |
PFLANZ ERNST L. |
分类号 |
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主分类号 |
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代理机构 |
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代理人 |
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主权项 |
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地址 |
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