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发明名称
MAGNETIC RHEOSTAT
摘要
申请公布号
CA452101(A)
申请公布日期
1948.10.26
申请号
CAD452101
申请日期
申请人
JOHN ROCKFIELD EVANS
发明人
JOHN ROCKFIELD EVANS
分类号
主分类号
代理机构
代理人
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