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经营范围
发明名称
Improvements in or relating to polar coordinate attachment
摘要
申请公布号
GB651608(A)
申请公布日期
1951.04.04
申请号
GB19480024013
申请日期
1948.09.13
申请人
ALLEN B. DU MONT LABORATORIES, INC.
发明人
分类号
G01R13/22
主分类号
G01R13/22
代理机构
代理人
主权项
地址
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