In the 1970s, Tenneco purchased 53% of J.I. Case when they purchased its owner Kern County Land Company, the agricultural equipment manufacturer based in Racine, Wisconsin, USA. In 1972, Tenneco purchased UK-based David Brown Tractors, and merged it with the J.I. Case business. In 1984, Case parent Tenneco bought selected assets of the International Harvester agriculture division and merged it with J.I. Case. All agriculture products are first labeled Case International and later Case IH. Tenneco purchased the articulated 4WD manufacturer Steiger Tractor in 1986, and merged it into Case IH.