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Clayton L. Hallmark

📍 Sidney, OH: #134 of 232 inventorsTop 60%
🗺 Ohio: #42,657 of 73,341 inventorsTop 60%
Overall (All Time): #3,627,994 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6121543 Groundbed electrode with graphite containing cement — 2000-09-19