DD

Douglas Graham Down

📍 Omaha, NE: #986 of 2,015 inventorsTop 50%
🗺 Nebraska: #2,834 of 5,697 inventorsTop 50%
Overall (All Time): #3,902,235 of 4,157,543Top 95%
1
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Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4923111 Combination mailing envelope and file folder — 1990-05-08