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发明名称
Gill-drawing frame
摘要
申请公布号
US2289870(A)
申请公布日期
1942.07.14
申请号
US19400361298
申请日期
1940.10.15
申请人
BERKER RALPH C
发明人
BERKER RALPH C.
分类号
D01H5/06
主分类号
D01H5/06
代理机构
代理人
主权项
地址
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