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经营范围
发明名称
Variable resistance bridge
摘要
申请公布号
US3222629(A)
申请公布日期
1965.12.07
申请号
US19610091079
申请日期
1961.02.23
申请人
BECKMAN INSTRUMENTS, INC.
发明人
MCCANN WILFRED
分类号
H01C10/32
主分类号
H01C10/32
代理机构
代理人
主权项
地址
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