DS

Donald Y. Shanfelt

UN Unknown: 5 patents #3,065 of 83,584Top 4%
📍 Lakewood, CO: #575 of 1,100 inventorsTop 55%
🗺 Colorado: #24,093 of 40,980 inventorsTop 60%
Overall (All Time): #4,103,794 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4182307 Inflatable solar energy collector Dannie K. Brindle 1980-01-08