RA

Robertus A. M. van Ardenne

📍 Voorschoten, NL: #25 of 112 inventorsTop 25%
Overall (All Time): #1,612,108 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6619678 Scooter — 2003-09-16
5957501 Cover for holding together sheets of paper, as well as a bundle of sheets of paper — 1999-09-28
5124702 Keyboaard for a word typewriter — 1992-06-23