Patent search ap:("STANDARD OIL DEV CO") AND inv:"BROWN STEPHEN S" Page 1

1.

发明授权
Device for controlling the injection of fluids 失效
Title translation: 用于控制流体注入的装置

公开(公告)号：US2543828A

公开(公告)日：1951-03-06

申请号：US8438749

申请日：1949-03-30

Applicant: STANDARD OIL DEV CO

Inventor： BROWN STEPHEN S

IPC: E21B33/068 , E21B41/02 , F04B49/16 , F04B53/06

CPC classification number: E21B33/068 , E21B41/02 , F04B49/16 , F04B53/06

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