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发明名称
摘要
申请公布号
DE2753873(C2)
申请公布日期
1983.12.01
申请号
DE19772753873
申请日期
1977.12.02
申请人
PORTA TEST MANUFACTURING LTD., EDMONTON, ALBERTA, CA
发明人
BEATTIE, DAVID LLOYD GEORGE, EDMONTON, ALBERTA, CA
分类号
B04C3/00;B01D19/00;B01D45/16;E21B43/34;(IPC1-7):B01D19/00;C10G33/00
主分类号
B04C3/00
代理机构
代理人
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