New Patent Assignments in Darke County, OH was 1.00000 Patents in January of 2023, according to the United States Federal Reserve. Historically, New Patent Assignments in Darke County, OH reached a record high of 75.00000 in June of 2020 and a record low of 1.00000 in January of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for New Patent Assignments in Darke County, OH - last updated from the United States Federal Reserve on May of 2024.