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发明名称
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摘要
申请公布号
US2988836(A)
申请公布日期
1961.06.20
申请号
US19590793645
申请日期
1959.02.16
申请人
LOUIS OBERFIELD
发明人
OBERFIELD LOUIS
分类号
E05B19/24
主分类号
E05B19/24
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