Inventor

USAMI YUKIHIKO

JP3 patents

Patents

3 patents

US5650762AJul 22, 1997

Fire alarm system

NOHMI BOSAI LTD11 citations71

US6081192AJun 27, 2000

Fire alarm system

NOHMI BOSAI LTD5 citations60

US5790018AAug 4, 1998

Fire alarm system

NOHMI BOSAI LTD5 citations60