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经营范围
发明名称
Door closer
摘要
An automatic motorized door closure having an arm freely movable on a motor shaft in response to opening a door and after a time delay being connected to the motor shaft and automatically moving the door to a closed position.
申请公布号
US4366595(A)
申请公布日期
1983.01.04
申请号
US19800178320
申请日期
1980.08.15
申请人
AMF INCORPORATED
发明人
ELLIOTT, JAMES D.
分类号
E05F15/10;E05F15/14;(IPC1-7):E05F15/12;E05F15/18;E05F15/20
主分类号
E05F15/10
代理机构
代理人
主权项
地址
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