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发明名称
BORRHUVUD
摘要
申请公布号
SE392499(B)
申请公布日期
1977.03.28
申请号
SE19720009951
申请日期
1972.07.31
申请人
MURPHY INDUSTRIES INC G W
发明人
SCHUMACHER JR P W
分类号
F16C35/06;E21B10/10;E21B10/22;(IPC1-7):E21B9/10
主分类号
F16C35/06
代理机构
代理人
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