RG

Richard P. Gunawardane

ND National Research Development: 2 patents #124 of 1,071Top 15%
Overall (All Time): #2,357,039 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4436546 Fertilizer material from apatite Fredrik Glasser 1984-03-13
4363650 Fertilizer material from apatite Fredrik Glasser 1982-12-14