In 1957, Case bought out the American Tractor Corporation (ATC). ATC was founded in 1950 and was a producer of small crawler tractors. Their production of dozers (marketed as Terradozers) and development of an integrated backhoe was of particular interest to Case. Case dropped the ATC name in 1959 only retaining the Terratrac name for the drive trains. This led to a hybrid tractor being rolled out of the Burlington Plant in 1957. This model, the 320 Construction King, would become synonymous in the United States to the name backhoe loader. Since then Case has released other models such as the T-Series which includes the 580T, 580ST, 590ST and 695ST. In 1998, a jury awarded a construction worker over $17million in damages after a defect in the design of the 580 backhoe led to him being crushed and being paralyzed from the waist down while operating the machine.