DB

David M. Barwacz

📍 Grand Rapids, MI: #715 of 1,824 inventorsTop 40%
🗺 Michigan: #35,034 of 86,293 inventorsTop 45%
Overall (All Time): #2,254,924 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5986718 Photographic method using chroma-key and a photobooth employing the same Jason J. Jensen 1999-11-16
5140829 Air conditioning system — 1992-08-25