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经营范围
发明名称
HYDRAULICALLY ACTUATED DOOR OPERATOR
摘要
申请公布号
US3477177(A)
申请公布日期
1969.11.11
申请号
USD3477177
申请日期
1967.04.18
申请人
OTIS ELEVATOR CO.
发明人
BENJAMIN WHITEHEAD TUCKER JR.
分类号
E05F15/06;(IPC1-7):E05F15/00
主分类号
E05F15/06
代理机构
代理人
主权项
地址
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