Inventor

OHWADA SACHIO

JP2 patents

Patents

2 patents

US7544122B2Jun 9, 2009

Air shutter and installation method thereof

MAEKAWA SEISAKUSHO KK2 citations56

US7037189B2May 2, 2006

Air shutter and installation method thereof

MAEKAWA SEISAKUSHO KK5 citations56