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经营范围
发明名称
Improvements in or relating to method of and apparatus for generating an electric wave
摘要
申请公布号
GB663064(A)
申请公布日期
1951.12.19
申请号
GB19480007574
申请日期
1948.03.12
申请人
SPERRY PRODUCTS, INC.
发明人
分类号
B06B3/04;G01B17/00;G01N29/04;G01N29/07;G01N29/22
主分类号
B06B3/04
代理机构
代理人
主权项
地址
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