TS

Tatsuo Sumida

CC Citizen Holdings Co.: 2 patents #121 of 431Top 30%
CC Citizen Watch Co.: 1 patents #668 of 1,225Top 55%
📍 Iruma, JP: #156 of 400 inventorsTop 40%
Overall (All Time): #2,027,265 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9010997 Electronic timepiece Moto Yamashita 2015-04-21
8345514 Radio-controlled timepiece and method of assembling the same Kazuo Sakamoto, Tadashi Yasuoka 2013-01-01