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发明名称
Elevated transportation system
摘要
申请公布号
US1846021(A)
申请公布日期
1932.02.23
申请号
US19280250434
申请日期
1928.01.30
申请人
BELL JOSEPH D
发明人
BELL JOSEPH D.
分类号
B61B3/02
主分类号
B61B3/02
代理机构
代理人
主权项
地址
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