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发明名称
Die lapping machine
摘要
申请公布号
US1990074(A)
申请公布日期
1935.02.05
申请号
US19340723870
申请日期
1934.05.04
申请人
FIRTH-STERLING STEEL COMPANY
发明人
HELMSTADTER PHILIP J.
分类号
B24B5/48
主分类号
B24B5/48
代理机构
代理人
主权项
地址
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