Donald K. Marshall

📍 Las Vegas, NV: #1,197 of 3,439 inventorsTop 35%

🗺 Nevada: #3,123 of 8,397 inventorsTop 40%

Overall (All Time): #2,120,457 of 4,157,543Top 55%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
7699017	Personal undersea observation pedal craft	—	2010-04-20
4669462	Disposable emergency respirator	—	1987-06-02