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发明名称
Dipper stick
摘要
申请公布号
US1824606(A)
申请公布日期
1931.09.22
申请号
US19260114832
申请日期
1926.06.09
申请人
KOEHRING COMPANY
发明人
LICHTENBERG ERICH H.
分类号
E02F3/38
主分类号
E02F3/38
代理机构
代理人
主权项
地址
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