DH

David A. Hollenbach

📍 Marion, OH: #41 of 122 inventorsTop 35%
🗺 Ohio: #30,338 of 73,341 inventorsTop 45%
Overall (All Time): #2,351,395 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D277328 Pivotable mailbox signal 1985-01-22
4412646 Two-piece mechanical flag 1983-11-01