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发明名称
Pivoted-leg compass
摘要
申请公布号
US2428964(A)
申请公布日期
1947.10.14
申请号
US19440546614
申请日期
1944.07.26
申请人
FIFE ELMER E
发明人
FIFE ELMER E.
分类号
B43L9/02
主分类号
B43L9/02
代理机构
代理人
主权项
地址
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