WD

William Christopher Duffy

Overall (2025): #76,624 of 469,880Top 20%
2
Patents 2025

Issued Patents 2025

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
RE50587 Fire-rated modular duct assembly suitable for exhausting flammable or hazardous gases, vapours and other materials 2025-09-16
12188679 Pre-fabricated modular fire-rated conduit assembly 2025-01-07