Your search Standard Heating and Air Conditioning Co.; Qualityrefrigeration, Inc.; Thermex Corporation;advance Energy Services, Inc.; Ray N.welter Heating Co.,plaintiffs--appellees, v. City of Minneapolis; Examination Board of Warm Air Heatinginstallers; Examination Board of Refrigerationinstallers; Board of Examiners Andplumbers, Defendants--appellees,minnesota Mechanical Contractors Association; Sheet Metal,air Conditioning & Roofing Contractors Association; Metroplumbing-heating-cooling Contractors Association,intervenors Defendants--appellants did not match any document.