David R. Machak

AR American Glass Research: 1 patents #6 of 16Top 40%

📍 Butler, PA: #185 of 347 inventorsTop 55%

🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%

Overall (All Time): #3,949,062 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4733973	Method and apparatus for testing glassware	Ronald A. Puvak, Russell D. Southwick	1988-03-29