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发明名称
Means for and method of restoring worn packing lands
摘要
申请公布号
US1911460(A)
申请公布日期
1933.05.30
申请号
US19310552409
申请日期
1931.07.22
申请人
MOODY RALPH G
发明人
MOODY RALPH G.
分类号
B21H7/00
主分类号
B21H7/00
代理机构
代理人
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