Parker-Hannifin Corp. is a diversified manufacturer of motion and control technologies and systems, providing engineered solutions for a wide variety of mobile, industrial and aerospace markets. It operates through the Diversified Industrial and Aerospace Systems business segments. The Diversified Industrial Segment offers products to original equipment manufacturers. The Aerospace Systems Segment involves products for the commercial and military aerospace markets. The company was founded by Arthur L. Parker in 1918 and is headquartered in Cleveland, OH.