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发明名称
Surface material working
摘要
申请公布号
US2326847(A)
申请公布日期
1943.08.17
申请号
US19390293269
申请日期
1939.09.02
申请人
BLAW-KNOX COMPANY
发明人
FANNING FRED H.
分类号
B23C3/00
主分类号
B23C3/00
代理机构
代理人
主权项
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