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发明名称
Universal protractor
摘要
申请公布号
US1952344(A)
申请公布日期
1934.03.27
申请号
US19300446947
申请日期
1930.04.24
申请人
WEBBER FRANK C
发明人
WEBBER FRANK C.
分类号
主分类号
代理机构
代理人
主权项
地址
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