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发明名称
Automatically-operable railway switch
摘要
申请公布号
US1759843(A)
申请公布日期
1930.05.27
申请号
US19290352381
申请日期
1929.04.04
申请人
FOULKE ROLAND R
发明人
FOULKE ROLAND R.
分类号
B61L11/02
主分类号
B61L11/02
代理机构
代理人
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地址
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