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发明名称
Roller ruler
摘要
申请公布号
US1792393(A)
申请公布日期
1931.02.10
申请号
US19280283039
申请日期
1928.06.05
申请人
PHILLIPS JOHN W
发明人
PHILLIPS JOHN W.
分类号
B43L7/04
主分类号
B43L7/04
代理机构
代理人
主权项
地址
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