At 11:05 AM 2/24/2012, Alan J Fletcher wrote:
At 06:54 AM 2/24/2012, Zell, Chris wrote:These battery pulsing/shuttling devices have been around since the Ed Grey motor. Whatever it is, it gets rediscovered and rediscovered
A bunch of Ed Grey links : starting in 1973, patent application 1980 http://www.rexresearch.com/evgray/1gray.htm
