Patent search ap:("BELL TELEPHONE LABOR INC") AND inv:"DILLINGER JOY F" Page 1

1.

发明授权
Magnetic material and method of treating magnetic materials 失效
Title translation: 磁性材料和磁性材料的处理方法

公开(公告)号：US2002689A

公开(公告)日：1935-05-28

申请号：US71367434

申请日：1934-03-02

Applicant: BELL TELEPHONE LABOR INC

Inventor： BOZORTH RICHARD M , DILLINGER JOY F

IPC: C04B35/26 , C21D1/78 , C21D8/12 , H01F1/16

CPC classification number: C21D8/12 , C04B35/26 , C21D1/78 , H01F1/16

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