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经营范围
发明名称
Push button operating mechanism for permeability tuning purposes
摘要
申请公布号
US2344091(A)
申请公布日期
1944.03.14
申请号
US19390257313
申请日期
1939.02.20
申请人
JOHNSON LABORATORIES, INC.
发明人
KIRK MARTIN J.
分类号
H03J5/12
主分类号
H03J5/12
代理机构
代理人
主权项
地址
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