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发明名称
Bulldozer
摘要
申请公布号
US2239943(A)
申请公布日期
1941.04.29
申请号
US19390267888
申请日期
1939.04.14
申请人
ROBERT SWORD
发明人
SWORD ROBERT
分类号
E02F3/76
主分类号
E02F3/76
代理机构
代理人
主权项
地址
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