WD

William Christopher Duffy

Overall (2018): #90,978 of 503,207Top 20%
2
Patents 2018

Issued Patents 2018

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10024569 Fire-rated modular duct assembly and improvements therein — 2018-07-17
9976768 Fire-rated modular duct assembly suitable for exhausting flammable or hazardous gases, vapours and other materials — 2018-05-22