New Patent Assignments in Polk County, IA was 4.00000 Patents in February of 2023, according to the United States Federal Reserve. Historically, New Patent Assignments in Polk County, IA reached a record high of 250.00000 in March of 2011 and a record low of 2.00000 in January of 1985. Trading Economics provides the current actual value, an historical data chart and related indicators for New Patent Assignments in Polk County, IA - last updated from the United States Federal Reserve on May of 2024.