Patent search ap:("CONOCO INC") AND inv:"AREN AARU PETORII" Page 1

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发明专利
CIRCULATING PUMP AND OPERATION METHOD THEREOF 失效

公开(公告)号：JPS62258179A

公开(公告)日：1987-11-10

申请号：JP8562287

申请日：1987-04-07

Applicant: CONOCO INC

Inventor： AREN AARU PETORII

IPC: E21B4/02 , E21B4/20 , E21B21/00 , E21B27/00 , E21B27/04 , F04C2/107

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