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经营范围
发明名称
Rotary rule with telescoping or folding handle and the like
摘要
申请公布号
US2295787(A)
申请公布日期
1942.09.15
申请号
US19400331342
申请日期
1940.04.24
申请人
HIRTH EDGAR F
发明人
HIRTH EDGAR F.
分类号
G01B3/12
主分类号
G01B3/12
代理机构
代理人
主权项
地址
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