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发明名称
Separable structure
摘要
申请公布号
US2293431(A)
申请公布日期
1942.08.18
申请号
US19390282101
申请日期
1939.06.30
申请人
FREASE HURXTHAL F
发明人
FREASE HURXTHAL F.
分类号
E04B1/343;E04B2/56;E04B5/12
主分类号
E04B1/343
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代理人
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