DR

David J. Rycroft

Overall (All Time): #1,632,416 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5876079 Waste removal device 1999-03-02
5688042 LED lamp Abolfazl Madadi, Morteza Showleh 1997-11-18
5365411 Exit signs with LED illumination Abi Madadi 1994-11-15