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发明名称
DISPOSITIF DE
摘要
申请公布号
BE767901(A4)
申请公布日期
1971.12.01
申请号
BE19710767901
申请日期
1971.06.01
申请人
INSTITUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFIANTS, 1 ET 4, AVENUE DE BOIS-PREAU, 92 - RUEIL-MALMAISON (FRANCE),
发明人
分类号
E21B21/00;(IPC1-7):E21B/
主分类号
E21B21/00
代理机构
代理人
主权项
地址
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