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摘要
申请公布号
US2607274(A)
申请公布日期
1952.08.19
申请号
US19470762071
申请日期
1947.07.19
申请人
DAVOS PRODUCTS COMPANY
发明人
DENZLER BERTHOLD
分类号
B23Q1/48
主分类号
B23Q1/48
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