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发明名称
Tooth for earth digging devices
摘要
申请公布号
US2250904(A)
申请公布日期
1941.07.29
申请号
US19400358536
申请日期
1940.09.26
申请人
BERTTRAM COFFMAN
发明人
COFFMAN BERTTRAM
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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