Inventor

TSUKAHARA KOJU

JP3 patents

Patents

3 patents

US6530812B2Mar 11, 2003

Secondary thrust arrangement for small watercraft

YAMAHA MOTOR CO LTD42 citations88

US7536855B2May 26, 2009

Exhaust control device for water jet propulsion boat

YAMAHA MOTOR CO LTD6 citations57

US8016989B2Sep 13, 2011

Exhaust gas sensor

YAMAHA MOTOR CO LTD2 citations54