Inventor

CASTLEBERRY WALTER

US2 patents

Patents

2 patents

US6604434B1Aug 12, 2003

Method and apparatus for determining the direction and rate of a rotating element

NEPTUNE TECHNOLOGY GROUP INC107 citations94

US7559012B2Jul 7, 2009

Method for error detection and flow direction determination in a measuring meter

NEPTUNE TECHNOLOGY GROUP INC8 citations79