HO

Hugh H. B. Oswell

📍 Hexham, GB: #7 of 25 inventorsTop 30%
Overall (All Time): #2,364,133 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4411285 Demand valve 1983-10-25
4273120 Underwater breathing apparatus 1981-06-16