ISO 1992-4:1974 http://www.iso.org ISO standards and projects ISO - International Organization for Standardization 240 http://www.iso.org/iso/logo_iso.gif http://www.iso.org ISO 1992-4:1974 ISO 1992-4:1974 - Commercial refrigerated cabinets -- Methods of test -- Part 4: Defrosting test This document reached stage 95.99 on 2005-10-17 , TC/SC: ISO/TC 86, ICS: 97.130.20 Withdrawn standards