RS

Robert C. Spain

📍 Frederick, OK: #4 of 7 inventorsTop 60%
🗺 Oklahoma: #6,781 of 12,736 inventorsTop 55%
Overall (All Time): #4,091,345 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4273032 Ventilator apparatus — 1981-06-16