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发明名称
Packing for pumps
摘要
申请公布号
US1787700(A)
申请公布日期
1931.01.06
申请号
US19280296811
申请日期
1928.08.01
申请人
PERSONS LAURENCE M
发明人
PERSONS LAURENCE M.
分类号
F16J15/52
主分类号
F16J15/52
代理机构
代理人
主权项
地址
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