DM

Donald John Mackay

RM Roberts Filter Manufacturing: 1 patents #5 of 9Top 60%
📍 Media, PA: #239 of 402 inventorsTop 60%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #3,888,700 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5061080 Rotary agitator Douglas H. Eden, R. Lee Roberts 1991-10-29