DB

Donald D. Brown

HB Hayes Industrial Brake: 2 patents #1 of 5Top 20%
📍 Thiensville, WI: #1 of 3 inventorsTop 35%
🗺 Wisconsin: #116 of 1,637 inventorsTop 8%
Overall (1989): #28,947 of 140,708Top 25%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4878346 Tab-aligned replaceable cartridge for master cylinder Glenn S. Metzelfeld, James A. V. Buckely 1989-11-07
4878567 Brake/locking differential James A. Buckley, Glenn S. Metzelfeld 1989-11-07