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摘要
申请公布号
US1998354(A)
申请公布日期
1935.04.16
申请号
US19340750730
申请日期
1934.10.30
申请人
SAMUEL L. UNGER
发明人
BINGER CHARLES A.
分类号
B42D15/08
主分类号
B42D15/08
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