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发明名称
Dial scale attachment
摘要
申请公布号
US2303010(A)
申请公布日期
1942.11.24
申请号
US19390303659
申请日期
1939.11.09
申请人
INDUSTRIAL PATENTS CORPORATION
发明人
WALTER CHARLES T.
分类号
G01G19/00
主分类号
G01G19/00
代理机构
代理人
主权项
地址
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