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发明名称
Pantograph
摘要
申请公布号
US1824871(A)
申请公布日期
1931.09.29
申请号
US19270238193
申请日期
1927.12.06
申请人
WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY
发明人
JR. JOHN A. CLARKE,
分类号
B60L5/30
主分类号
B60L5/30
代理机构
代理人
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