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经营范围
发明名称
Peat digging apparatus
摘要
申请公布号
US2415728(A)
申请公布日期
1947.02.11
申请号
US19440551551
申请日期
1944.08.28
申请人
COLBY ELI F
发明人
COLBY ELI F.
分类号
E21C49/04
主分类号
E21C49/04
代理机构
代理人
主权项
地址
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SILENCER
