Inventor

BUTTERWORTH JAMES R

US3 patents

Patents

3 patents

US7912427B2Mar 22, 2011

Single-wire multiswitch and channelized RF cable test meter

DIRECTV GROUP INC10 citations82

US7149470B1Dec 12, 2006

Direct broadcast receiver utilizing LNB in cascade

DIRECTV GROUP INC9 citations70

US7663560B1Feb 16, 2010

Antenna pointing aid

DIRECTV GROUP INC6 citations55