Donald L. Emerson, JR.

📍 Wilsonville, OR: #4 of 9 inventorsTop 45%

🗺 Oregon: #179 of 893 inventorsTop 25%

Overall (1989): #119,720 of 140,708Top 90%

Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4879964	Air brake adjustment marker	—	1989-11-14