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经营范围
发明名称
Road material spreading machine
摘要
申请公布号
US2076890(A)
申请公布日期
1937.04.13
申请号
US19320639475
申请日期
1932.10.25
申请人
HELTZEL JOHN N
发明人
HELTZEL JOHN N.
分类号
E01C19/42
主分类号
E01C19/42
代理机构
代理人
主权项
地址
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