John D. Bothum

📍 Albert Lea, MN: #18 of 53 inventorsTop 35%

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

Overall (All Time): #2,292,711 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5291806	Spade-type drill bit apparatus and method	—	1994-03-08
5221166	Spade-type drill bit apparatus and method	—	1993-06-22