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发明名称
Electric stairway
摘要
申请公布号
US2259366(A)
申请公布日期
1941.10.14
申请号
US19400369039
申请日期
1940.12.07
申请人
WESTINGHOUSE ELECTRIC ELEVATOR COMPANY
发明人
DUNLOP JAMES
分类号
B66B29/00
主分类号
B66B29/00
代理机构
代理人
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地址
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