Inventor
NISHIYAMA KANAKO
JP3 patents
Patents
3 patentsUS10270229B2Apr 23, 2019
Spark plug production method, spark plug production device and assembly inspection method
NGK SPARK PLUG CO3 citations65
US10447015B2Oct 15, 2019
Spark plug production method, spark plug production device and assembly inspection method
NGK SPARK PLUG CO0 citations44
US10205306B2Feb 12, 2019
Method for producing spark plug
NGK SPARK PLUG CO0 citations33