DB

Daniel J. Birgen

📍 Graham, WA: #27 of 49 inventorsTop 60%
🗺 Washington: #48,111 of 76,902 inventorsTop 65%
Overall (All Time): #3,376,998 of 4,157,543Top 85%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7171817 Heat exchanger liquid refrigerant defrost system — 2007-02-06