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发明名称
PISTON PACKING
摘要
申请公布号
CA387434(A)
申请公布日期
1940.03.12
申请号
CAD387434
申请日期
申请人
JOHNS-MANVILLE CORPORATION
发明人
GEORGE CHRISTENSON
分类号
主分类号
代理机构
代理人
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地址
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