JF

John L. Frost

📍 Rydal, PA: #32 of 58 inventorsTop 60%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #4,106,349 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4188760 Masonry building block and method for forming such a block — 1980-02-19