Douglas D. Oster

📍 Lonsdale, MN: #14 of 29 inventorsTop 50%

🗺 Minnesota: #23,881 of 52,454 inventorsTop 50%

Overall (All Time): #2,286,071 of 4,157,543Top 55%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5429531	Hard lead-alloy battery clamp with two-way action armatures	—	1995-07-04
5407369	Battery clamp	—	1995-04-18