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经营范围
发明名称
CLOSURE OPERATOR
摘要
A closure operator to effect remote, fail-safe opening and closing of a closure, particularly a multifold or interlocking slat curtain damper.
申请公布号
US3646877(A)
申请公布日期
1972.03.07
申请号
USD3646877
申请日期
1969.12.22
申请人
RIXSON INC.
发明人
DAVID H. ELLIS
分类号
A62C2/16;(IPC1-7):F24F13/00
主分类号
A62C2/16
代理机构
代理人
主权项
地址
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