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发明名称
Geometrical device
摘要
申请公布号
US1912380(A)
申请公布日期
1933.06.06
申请号
US19280285379
申请日期
1928.06.14
申请人
MCCULLY HARRY M
发明人
MCCULLY HARRY M.
分类号
G01C21/00
主分类号
G01C21/00
代理机构
代理人
主权项
地址
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