Patent search ap:("BAASH ROSS TOOL CO" OR "STANDARD OIL DEV CO") AND inv:"CARROLL BROWN HENRY" Page 1

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发明授权
Rotary releasing socket 失效
Title translation: 旋转释放插座

公开(公告)号：US2301377A

公开(公告)日：1942-11-10

申请号：US41290041

申请日：1941-09-29

Applicant: BAASH ROSS TOOL CO , STANDARD OIL DEV CO

Inventor： CRAIG HARLEY J , CARROLL BROWN HENRY , DOUGLAS RAGLAND

IPC: E21B31/107

CPC classification number: E21B31/107

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