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发明名称
RING PACKING
摘要
申请公布号
CA364954(A)
申请公布日期
1937.03.23
申请号
CAD364954
申请日期
申请人
THE JOHNS-MANVILLE CORPORATION
发明人
GEORGE CHRISTENSON
分类号
主分类号
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代理人
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地址
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