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发明名称
Escalator
摘要
申请公布号
US2677451(A)
申请公布日期
1954.05.04
申请号
US19530363148
申请日期
1953.06.22
申请人
LOUIS NORMANDEAU
发明人
NORMANDEAU LOUIS
分类号
B66B21/08
主分类号
B66B21/08
代理机构
代理人
主权项
地址
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