Frederick G. Hoff has been granted 3 US patents while listed as an inventor at Simmonds Precision Products. The first was granted in 1990 and the most recent in January 1995. Frederick G. Hoff ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Frederick G. Hoff in Middlebury, VT, US.