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发明名称
Signalling system
摘要
申请公布号
US3054100(A)
申请公布日期
1962.09.11
申请号
US19580739909
申请日期
1958.06.04
申请人
GENERAL PRECISION, INC.
发明人
JONES CLARENCE S.
分类号
B61L25/04
主分类号
B61L25/04
代理机构
代理人
主权项
地址
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