Inventor
EZAKI TOMOTAKA
JP3 patents
Patents
3 patentsUS6914380B2Jul 5, 2005
Vacuum fluorescent display having x-ray shielding cap
NORITAKE CO LTD3 citations59
US6917157B2Jul 12, 2005
Electrode for electron source, method for producing the same, and electronic tube using the same
NORITAKE CO LTD2 citations58
US11062871B2Jul 13, 2021
Analog amplification vacuum tube
NORITAKE CO LTD0 citations55