JP

Joseph Parrotto

JM Joy Manufacturing: 1 patents #39 of 116Top 35%
📍 Chambersburg, PA: #95 of 197 inventorsTop 50%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #4,122,185 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4229124 Automatic roof bolting system for mines G. Robert Frey, Francis X. Fontaine 1980-10-21