DM

Douglas MacPherson

UN Unknown: 1 patents #29,356 of 83,584Top 40%
📍 Tampa, FL: #1,046 of 2,931 inventorsTop 40%
🗺 Florida: #22,299 of 67,251 inventorsTop 35%
Overall (All Time): #2,049,534 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
8715582 Apparatus and method for producing activated carbon Earl R. Decker, Walter David Hemenway, Carl B. Melanson 2014-05-06
4356724 Apparatus and method for testing transmissions Stephen J. Ayoub, Thomas Rizzo 1982-11-02