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发明名称
Apparatus for the control of highway crossing signals
摘要
申请公布号
US2719218(A)
申请公布日期
1955.09.27
申请号
US19490133562
申请日期
1949.12.17
申请人
WESTINGHOUSE AIR BRAKE COMPANY
发明人
MILLER ALFRED B.
分类号
B61L29/28
主分类号
B61L29/28
代理机构
代理人
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地址
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