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发明名称
Tractor
摘要
申请公布号
US1821007(A)
申请公布日期
1931.09.01
申请号
US19290380671
申请日期
1929.07.24
申请人
DE BOER JOHN
发明人
BOER JOHN DE
分类号
B62D49/00
主分类号
B62D49/00
代理机构
代理人
主权项
地址
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