发明授权
- 专利标题: Intermittently operating direction responsive switch
- 专利标题(中): 间歇操作方向响应开关
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申请号: US15204450申请日: 1950-03-27
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公开(公告)号: US2664477A公开(公告)日: 1953-12-29
- 发明人: LEWIS HOWARD B , FIELD JR HOWARD
- 申请人: B F MCDONALD COMPANY
- 专利权人: B F Mcdonald Company
- 当前专利权人: B F Mcdonald Company
- 优先权: US15204450 1950-03-27
- 主分类号: H01H35/12
- IPC分类号: H01H35/12
公开/授权文献
- US10706889B2 Selective content insertion into areas of media objects 公开/授权日:2020-07-07
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