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公开(公告)号:US3549552A
公开(公告)日:1970-12-22
申请号:US3549552D
申请日:1969-01-27
发明人: BROEKHOVEN JACOB VAN
CPC分类号: C09K11/76
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2.Halophosphate phosphor material of improved luminosity and maintenance characteristics for fluorescent lamps 失效
标题翻译: 卤磷磷光体材料具有提高荧光灯的亮度和维护特性公开(公告)号:US3255373A
公开(公告)日:1966-06-07
申请号:US68478157
申请日:1957-09-18
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4.Coil winding machine and method in which bobbin assembly rotates slower than coiling head assembly and in a fixed ratio 失效
标题翻译: 线圈卷绕机及其方法,其中筒管组件比卷取头组件旋转速度慢并且固定比例公开(公告)号:US2816594A
公开(公告)日:1957-12-17
申请号:US44354154
申请日:1954-06-30
发明人: BROEKHOVEN JACOB VAN
IPC分类号: H01K3/04
CPC分类号: H01K3/04
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