Michael H. Sweeney has been granted 2 US patents while listed as an inventor at Spatial Positioning Systems. The first was granted in 1995 and the most recent in November 1996. Michael H. Sweeney ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Michael H. Sweeney in Wixom, MI, US.