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经营范围
发明名称
Air barrier
摘要
申请公布号
US3023688(A)
申请公布日期
1962.03.06
申请号
US19580735898
申请日期
1958.05.16
申请人
KRAMER JR FRED A
发明人
JR. FRED A. KRAMER,
分类号
F24F9/00
主分类号
F24F9/00
代理机构
代理人
主权项
地址
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