FS

Frank A. Shirek

📍 Hettinger, ND: #4 of 7 inventorsTop 60%
🗺 North Dakota: #1,185 of 2,395 inventorsTop 50%
Overall (All Time): #3,967,822 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4641439 Rock digging apparatus — 1987-02-10