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发明名称
Pointing hawk
摘要
申请公布号
US2821078(A)
申请公布日期
1958.01.28
申请号
US19550529207
申请日期
1955.08.18
申请人
STEWARD ARTHUR D
发明人
STEWARD ARTHUR D.
分类号
E04F21/06
主分类号
E04F21/06
代理机构
代理人
主权项
地址
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