DR

David A. C. Royle

📍 Darlington, GB: #8 of 58 inventorsTop 15%
Overall (All Time): #1,267,005 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
6811454 Suspension system — 2004-11-02
D449565 Amphibious vehicle — 2001-10-23
D447443 Amphibious bus — 2001-09-04
5176098 Retractable wheels — 1993-01-05