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发明名称
Oil seal
摘要
申请公布号
US1971422(A)
申请公布日期
1934.08.28
申请号
US19330658541
申请日期
1933.02.25
申请人
MARSH CHARLES W
发明人
MARSH CHARLES W.
分类号
F16C33/78
主分类号
F16C33/78
代理机构
代理人
主权项
地址
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