Joseph W. Hoffman

AM Amp: 2 patents #506 of 1,260Top 45%

📍 Liverpool, PA: #3 of 7 inventorsTop 45%

🗺 Pennsylvania: #30,495 of 74,527 inventorsTop 45%

Overall (All Time): #2,357,844 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4445716	Device and method for anchoring an end of a plastic liner inside a pipe	—	1984-05-01
4247234	Pipe grooving tool	—	1981-01-27