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发明名称
Safety apparatus for elevators
摘要
申请公布号
US1977452(A)
申请公布日期
1934.10.16
申请号
US19300501013
申请日期
1930.12.09
申请人
ROBERT NEUSCHOTZ
发明人
NEUSCHOTZ ROBERT
分类号
B66B5/18
主分类号
B66B5/18
代理机构
代理人
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地址
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PRESSURE RESPONSIVE VALVE
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