David M. Hopfer

📍 Turner, OR: #3 of 9 inventorsTop 35%

🗺 Oregon: #17,068 of 28,073 inventorsTop 65%

Overall (All Time): #3,983,014 of 4,157,543Top 100%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4697351	Adjustable layout square	—	1987-10-06