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经营范围
发明名称
Combination joint and traffic line installing machine
摘要
申请公布号
US1956680(A)
申请公布日期
1934.05.01
申请号
US19290414538
申请日期
1929.12.16
申请人
HELTZEL JOHN N
发明人
HELTZEL JOHN N.
分类号
E01C23/02
主分类号
E01C23/02
代理机构
代理人
主权项
地址
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