Inventor

ISHIWADA HIROFUMI

JP2 patents

Patents

2 patents

US8979432B2Mar 17, 2015

Vortex flow type water surface control device for draining device

UEMURA IKUO0 citations38

US8459900B2Jun 11, 2013

Vortex flow type water surface control device for draining device

UEMURA IKUO1 citations38