DH

Douglas S. Hammond

MA Manville: 2 patents #8 of 54Top 15%
📍 Newark, OH: #4 of 29 inventorsTop 15%
🗺 Ohio: #248 of 3,574 inventorsTop 7%
Overall (1989): #28,875 of 140,708Top 25%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D300670 Luminaire Robert L. Ewing, Mark L. Roush 1989-04-11
D300671 Luminaire Robert L. Ewing, James L. Leary, David G. Meredith, Mark L. Roush 1989-04-11