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1.Indicating meter relay with photoelectric means for sensing the overlapping of indicating pointer over set pointer 失效
标题翻译: 指示仪表继电器用于感测指示器超过设定点的重叠公开(公告)号:US3441740A
公开(公告)日:1969-04-29
申请号:US3441740D
申请日:1966-09-12
公开(公告)号:US3441740A
公开(公告)日:1969-04-29
申请号:US3441740D
申请日:1966-09-12