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发明名称
Forged dipper tooth
摘要
申请公布号
US1890981(A)
申请公布日期
1932.12.13
申请号
US19320612422
申请日期
1932.05.20
申请人
A. FINKL & SONS COMPANY
发明人
FINKL FRED
分类号
E02F9/28
主分类号
E02F9/28
代理机构
代理人
主权项
地址
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