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摘要
申请公布号
US2287454(A)
申请公布日期
1942.06.23
申请号
US19410397344
申请日期
1941.06.09
申请人
MARIE M. SCHARNBERG
发明人
SCHARNBERG MARIE M.
分类号
E04B1/61;F16B5/00
主分类号
E04B1/61
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