Keith B. Risser

📍 Columbia, MD: #14 of 108 inventorsTop 15%

🗺 Maryland: #235 of 2,389 inventorsTop 10%

Overall (2002): #55,196 of 266,432Top 25%

Patents 2002

Issued Patents 2002

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
6415571	Sub-deck drainage system or gutter comprising a trapezoidal shaped panel of thermoset, thermoplastic, or modified bitumen membrane	—	2002-07-09
6385931	Fire retardant deck waterproof system	—	2002-05-14