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经营范围
发明名称
Helitractor
摘要
申请公布号
US1850993(A)
申请公布日期
1932.03.29
申请号
US19290398423
申请日期
1929.10.09
申请人
BRYANT CHESTER
发明人
CHESTER BRYANT
分类号
B64C29/00
主分类号
B64C29/00
代理机构
代理人
主权项
地址
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