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发明名称
Method of and apparatus for manufacturing screens
摘要
申请公布号
US2068675(A)
申请公布日期
1937.01.26
申请号
US19350002064
申请日期
1935.01.16
申请人
HELLER RICHARD D
发明人
HELLER RICHARD D.
分类号
B21F27/18
主分类号
B21F27/18
代理机构
代理人
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