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经营范围
发明名称
Squaring scale
摘要
申请公布号
US2388174(A)
申请公布日期
1945.10.30
申请号
US19430489751
申请日期
1943.06.05
申请人
NACHEL EDWARD R
发明人
NACHEL EDWARD R.
分类号
G03F1/90
主分类号
G03F1/90
代理机构
代理人
主权项
地址
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