JR

John B. Ratelband

📍 Oosterbeek, NL: #8 of 67 inventorsTop 15%
Overall (All Time): #1,680,435 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4541408 Fire-guard 1985-09-17
4412524 Fire-guard 1983-11-01
4304216 Fire-guard 1981-12-08