VD

Vivian T. Douglas

📍 Wheat Ridge, CO: #51 of 146 inventorsTop 35%
🗺 Colorado: #17,029 of 40,980 inventorsTop 45%
Overall (All Time): #2,315,638 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5005844 Travois with roller assembly George Douglas 1991-04-09
4838565 Rolling travois George Douglas 1989-06-13