LG

Lawrence E. Gray

ST Sandvik Rock Tools: 1 patents #17 of 31Top 55%
Overall (All Time): #3,794,771 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5301763 Apparatus for drilling holes in mine roofs and a roof drill bit for use therein Kent Peay 1994-04-12