CM

Charles W. Mayfield

TD The Youngstown Steel Door: 2 patents #4 of 12Top 35%
📍 Youngstown, OH: #90 of 284 inventorsTop 35%
🗺 Ohio: #30,338 of 73,341 inventorsTop 45%
Overall (All Time): #2,361,701 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4377304 Door lock Oliver J. Jenkins 1983-03-22
4353187 Door repair method and repair section therefor Oliver J. Jenkins 1982-10-12