RK

Rene Kalfon

📍 Bois-Guillaume, FR: #19 of 71 inventorsTop 30%
Overall (All Time): #2,335,751 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4768222 Control and surveillance system for prepayment public telephone apparatus — 1988-08-30
4731819 Prepayment product or service dispenser — 1988-03-15