David B. Shaffer

📍 Annapolis, MD: #18 of 56 inventorsTop 35%

🗺 Maryland: #713 of 2,889 inventorsTop 25%

Overall (2011): #319,630 of 364,097Top 90%

Patents 2011

Issued Patents 2011

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
8021445	Upgrading carbonaceous materials	—	2011-09-20