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发明名称
Gate control
摘要
申请公布号
US2851720(A)
申请公布日期
1958.09.16
申请号
US19550532447
申请日期
1955.09.06
申请人
WOELFLING FRED W
发明人
WOELFLING FRED W.
分类号
E05F1/10
主分类号
E05F1/10
代理机构
代理人
主权项
地址
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