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发明名称
FREQUENCY DISCRIMINATOR IN PARTICULAR FOR CONTROLLING RAILROAD COACH EQUIPMENT IN DEPENDENCE ON TRAIN SPEED
摘要
申请公布号
PL154923(B1)
申请公布日期
1991.09.30
申请号
PL19870266044
申请日期
1987.06.01
申请人
发明人
分类号
B61L;G05D13/62;H03D;H03D3/02;(IPC1-7):H03D3/02
主分类号
B61L
代理机构
代理人
主权项
地址
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