Gardner Denver, Inc., formerly known as Gardner Denver Machinery Inc. is one of the leading manufacturers of stationary air compressors and blowers for industrial applications. Stationary air compressors are used in manufacturing, process applications and materials handling, and to power air tools and equipment. Blowers are used primarily in the pneumatic conveying, wastewater aeration and vacuum systems. They are also one of the leading manufacturers of petroleum pumps used in oil and natural gas drilling and production, well servicing and well stimulation.