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发明名称
Operator devices
摘要
申请公布号
US3395618(A)
申请公布日期
1968.08.06
申请号
US19660591066
申请日期
1966.08.24
申请人
OTIS ENGINEERING CORPORATION
发明人
FREDD JOHN V.
分类号
F15B15/26
主分类号
F15B15/26
代理机构
代理人
主权项
地址
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