John M. Downey

📍 Silver Spring, MD: #14 of 68 inventorsTop 25%

🗺 Maryland: #225 of 1,164 inventorsTop 20%

Overall (1989): #95,785 of 140,708Top 70%

Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4813433	Syringe for withdrawing blood	—	1989-03-21