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发明名称
PRESSURIZED REFINER SEAL ASSEMBLY
摘要
申请公布号
US3701488(A)
申请公布日期
1972.10.31
申请号
USD3701488
申请日期
1971.07.22
申请人
SPROUT WALDRON & CO. INC.
发明人
CHESTER DONALD FISHER
分类号
D21D1/30;F16J15/34;F16J15/447;(IPC1-7):B02C7/11
主分类号
D21D1/30
代理机构
代理人
主权项
地址
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