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经营范围
发明名称
Valve seat dressing device
摘要
申请公布号
US2019790(A)
申请公布日期
1935.11.05
申请号
US19340710869
申请日期
1934.02.12
申请人
M. B. SKINNER CO.
发明人
MISCH ARTHUR
分类号
B23C3/05
主分类号
B23C3/05
代理机构
代理人
主权项
地址
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