BD

Betty D. Drake

📍 Shingletown, CA: #4 of 6 inventorsTop 70%
🗺 California: #247,236 of 386,348 inventorsTop 65%
Overall (All Time): #4,049,284 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
D268133 Platform for supporting a ladder on stairs — 1983-03-01