FJ

Frederick J. Mastroni, Jr.

📍 Richboro, PA: #70 of 125 inventorsTop 60%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #3,874,115 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5007321 Power operated string vibrating device for selectively vibrating a string of a stringed musical instrument 1991-04-16