GT

Gary D. Tyrell

TE The Eastern: 1 patents #60 of 119Top 55%
Overall (All Time): #3,997,611 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4596496 Mine roof supporting truss system Robert W. Hill, Jerry E. Frease 1986-06-24