Donald H. Matthews

📍 Cockeysville, MD: #146 of 330 inventorsTop 45%

🗺 Maryland: #13,387 of 35,612 inventorsTop 40%

Overall (All Time): #2,213,023 of 4,157,543Top 55%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
6378541	Ergonomic crutch	—	2002-04-30
5067445	Device for capturing and restraining animals	—	1991-11-26