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发明名称
Hydraulic scale
摘要
申请公布号
US1782255(A)
申请公布日期
1930.11.18
申请号
US19290394001
申请日期
1929.09.20
申请人
WASHINGTON CALVERT GEORGE
发明人
CALVERT GEORGE WASHINGTON
分类号
G01G5/04
主分类号
G01G5/04
代理机构
代理人
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地址
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