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发明名称
Door operator
摘要
申请公布号
US2912237(A)
申请公布日期
1959.11.10
申请号
US19570664094
申请日期
1957.06.06
申请人
GENERAL MOTORS CORPORATION
发明人
SNYDER HAROLD M.
分类号
E05D15/00;E05F15/12
主分类号
E05D15/00
代理机构
代理人
主权项
地址
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