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经营范围
发明名称
UNIDIRECTIONAL PUMPING SEAL
摘要
申请公布号
US3554561(A)
申请公布日期
1971.01.12
申请号
USD3554561
申请日期
1969.06.10
申请人
GENERAL MOTORS CORP.
发明人
LOUIS H. WEINAND
分类号
F16J15/32;(IPC1-7):F16J15/32;F16J15/02
主分类号
F16J15/32
代理机构
代理人
主权项
地址
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