Inventor
WORRELL KEVIN
US4 patents
Patents
4 patentsUS8133155B2Mar 13, 2012
Multi-ratio rotorcraft drive system and a method of changing gear ratios thereof
EHINGER RYAN T14 citations89
US8454475B2Jun 4, 2013
Multi-ratio rotorcraft drive system and a method of changing gear ratios thereof
EHINGER RYAN T2 citations59
US8500597B2Aug 6, 2013
Multi-ratio rotorcraft drive system and a method of changing gear ratios thereof
EHINGER RYAN T0 citations49
US8449432B2May 28, 2013
Multi-ratio rotorcraft drive system and a method of changing gear ratios thereof
EHINGER RYAN T0 citations49