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发明名称
Checker assembly
摘要
申请公布号
US2509168(A)
申请公布日期
1950.05.23
申请号
US19460641730
申请日期
1946.01.17
申请人
FREYN ENGINEERING COMPANY
发明人
RICE OWEN R.
分类号
C21B9/06
主分类号
C21B9/06
代理机构
代理人
主权项
地址
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