BS

Brian Douglas Spreen

📍 Stony Plain, CA: #14 of 47 inventorsTop 30%
Overall (All Time): #1,819,500 of 4,157,543Top 45%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11752811 Tire pressure control valve assembly Lesley Joseph Hinz 2023-09-12
10549585 Tire pressure control system Lesley Joseph Hinz 2020-02-04