US lawWashingtonRegulationsTitle 434 — SECRETARY OF STATEChapter 434-663 — IMAGING SYSTEMS, STANDARDS FOR ACCURACY AND DURABILITY434-663-260WAC 434-663-260WAC 434-663-260. De facto standardLast amended: 1994Year: 2026Length: 17 wordsOfficial source A de facto standard is a widely accepted industry standard without official recognition by a standards group.PreviousWAC 434-663-250NextWAC 434-663-270