John R. Kessler has been granted 14 US patents while listed as an inventor at Monarch Marking Systems. The first was granted in 1983 and the most recent in September 2015. John R. Kessler ranks #332,869 of 4,157,543 US inventors in our database (top 8.0%). Patent records list John R. Kessler in West Carrollton, OH, US.