Sinclair D. MacGregor has been granted 4 US patents while listed as an inventor at Jadoo Power Systems. The first was granted in 2007 and the most recent in March 2011. Sinclair D. MacGregor ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Sinclair D. MacGregor in Shingle Springs, CA, US.