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发明名称
Pneumatic door operating mechanism
摘要
申请公布号
US2586442(A)
申请公布日期
1952.02.19
申请号
US19500147714
申请日期
1950.03.04
申请人
ASTRA ENGINEERING COMPANY
发明人
SEAGREN NILS G.
分类号
E05F15/12
主分类号
E05F15/12
代理机构
代理人
主权项
地址
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