Harold E. Christofferson

📍 Scappoose, OR: #29 of 57 inventorsTop 55%

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

Overall (All Time): #3,591,878 of 4,157,543Top 90%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
D446700	Hand tool	Sven E. Christofferson	2001-08-21