HL

Henry A. Leonard

BC Birmingham Bolt Co.: 1 patents #5 of 7Top 75%
🗺 Alabama: #5,342 of 10,951 inventorsTop 50%
Overall (All Time): #3,891,905 of 4,157,543Top 95%
1
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Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5073064 Method and apparatus for retorquing an installed mine roof bolt Charles W. Schaffer 1991-12-17