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经营范围
发明名称
Sound generator
摘要
申请公布号
US3097600(A)
申请公布日期
1963.07.16
申请号
US19460664870
申请日期
1946.04.25
申请人
HOPKINS JAMES C;BENNETT OWEN G
发明人
HOPKINS JAMES C.;BENNETT OWEN G.
分类号
F42B4/24;F42B12/36;F42C7/12
主分类号
F42B4/24
代理机构
代理人
主权项
地址
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