Patent search ap:("NAT RES DEV") AND inv:"NIX GEORGE FRANCIS" Page 1

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发明授权
Commutating electric currents 失效
Title translation: 交流电流

公开(公告)号：US3532949A

公开(公告)日：1970-10-06

申请号：US3532949D

申请日：1968-11-06

Applicant: NAT RES DEV

Inventor： WILLIAMS FREDERIC CALLAND , NIX GEORGE FRANCIS

IPC: H02K13/14 , H02M1/22 , H02P7/00 , H01R39/46 , H02M7/60

CPC classification number: H02M1/22 , H02K13/14

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