SC

Shih-Chih Chang

📍 Richland, WA: #1 of 37 inventorsTop 3%
🗺 Washington: #71 of 1,406 inventorsTop 6%
Overall (1989): #16,130 of 140,708Top 15%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4867603 Device for preventing flooding caused by sprinkler failure — 1989-09-19
4842198 Device for damage protection against local flooding caused by sprinkler failure — 1989-06-27