Fred E. Sjogren

UN Unknown: 3 patents #7,366 of 83,584Top 9%

📍 Coos Bay, OR: #16 of 44 inventorsTop 40%

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

Overall (All Time): #4,079,167 of 4,157,543Top 100%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4361198	Scale pad and valve structure	—	1982-11-30