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发明名称
Printing scale
摘要
申请公布号
US2317760(A)
申请公布日期
1943.04.27
申请号
US19390260243
申请日期
1939.03.06
申请人
ARTHUR HAHN
发明人
HAHN ARTHUR
分类号
G01G23/18
主分类号
G01G23/18
代理机构
代理人
主权项
地址
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