Patent search ap:("NEC CORP") AND inv:"NAKAYAMA MAKOTO" Page 3

21.

发明专利
Phase missing detection circuit for 3-phase altering current 失效
Title translation: 用于三相电流电流的相位缺失检测电路

公开(公告)号：JPS61139220A

公开(公告)日：1986-06-26

申请号：JP26080184

申请日：1984-12-12

Applicant: Nec Corp

Inventor： NAKAYAMA MAKOTO

IPC: H02H3/34 , G01R29/18 , H02H3/253

Patent Agency Ranking