Harold Zimmerman

📍 Bismarck, ND: #2 of 5 inventorsTop 40%

🗺 North Dakota: #11 of 92 inventorsTop 15%

Overall (1989): #107,336 of 140,708Top 80%

Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4876798	Level with illuminated bubble vials	—	1989-10-31