DH

Douglas K. Harman

📍 Columbus, OH: #1,440 of 3,880 inventorsTop 40%
🗺 Ohio: #30,338 of 73,341 inventorsTop 45%
Overall (All Time): #2,246,186 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D404979 Bottle-attaching funnel Walter D. Harman 1999-02-02
D401143 Attachment-bearing bottle Walter D. Harman 1998-11-17