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发明名称
Elevator signaling system
摘要
申请公布号
US2066841(A)
申请公布日期
1937.01.05
申请号
US19280249012
申请日期
1928.01.24
申请人
EMIL PAUL BUTUSOV
发明人
LEWY DANIEL
分类号
B66B1/18
主分类号
B66B1/18
代理机构
代理人
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