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

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发明授权
Stressed ferrite cores 失效
Title translation: 强调铁氧体磁心

公开(公告)号：US2818514A

公开(公告)日：1957-12-31

申请号：US31274652

申请日：1952-10-02

Applicant: BELL TELEPHONE LABOR INC

Inventor： GOERTZ MATILDA F , WILLIAMS HOWELL J

IPC: C04B35/26 , H01F1/34 , H01F17/04 , H01F41/02

CPC classification number: H01F41/0246 , C04B35/265 , H01F1/344 , H01F17/04

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