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发明名称
Hall lantern
摘要
申请公布号
US1770373(A)
申请公布日期
1930.07.15
申请号
US19280246749
申请日期
1928.01.14
申请人
OTIS ELEVATOR COMPANY
发明人
BOEHME ARTHUR E.;NESTLE FRED A.
分类号
B66B3/00
主分类号
B66B3/00
代理机构
代理人
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