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经营范围
发明名称
Locomotive
摘要
申请公布号
US2521142(A)
申请公布日期
1950.09.05
申请号
US19450603118
申请日期
1945.07.04
申请人
BARRETT CHARLES D
发明人
BARRETT CHARLES D.
分类号
B61C1/02
主分类号
B61C1/02
代理机构
代理人
主权项
地址
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