New Patent Assignments in St. Clair County, MI was 1.00000 Patents in February of 2023, according to the United States Federal Reserve. Historically, New Patent Assignments in St. Clair County, MI reached a record high of 57.00000 in September of 2019 and a record low of 1.00000 in March of 1983. Trading Economics provides the current actual value, an historical data chart and related indicators for New Patent Assignments in St. Clair County, MI - last updated from the United States Federal Reserve on May of 2024.