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发明名称
INRICHTING VOOR HET VERWERKEN VAN SIGNALEN IN EEN BOORGAT TIJDENS HET BOREN.
摘要
申请公布号
NL8302429(A)
申请公布日期
1984.02.01
申请号
NL19830002429
申请日期
1983.07.07
申请人
NL SPERRY-SUN, INC. TE STAFFORD, TEXAS, VER. ST. V. AM.
发明人
分类号
G08C23/00;E21B41/00;E21B47/18;(IPC1-7):E21B47/12;G01V1/22
主分类号
G08C23/00
代理机构
代理人
主权项
地址
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