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经营范围
发明名称
Electrical measuring instrument
摘要
申请公布号
US2129204(A)
申请公布日期
1938.09.06
申请号
US19360074968
申请日期
1936.04.17
申请人
WILFRED DUPERRON
发明人
DUPERRON WILFRED
分类号
F02P17/00
主分类号
F02P17/00
代理机构
代理人
主权项
地址
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