RD

Ricardo Dreyfous

📍 Trujillo Alto, PR: #1 of 1 inventorsTop 100%
🗺 Puerto Rico: #4 of 17 inventorsTop 25%
Overall (1997): #89,250 of 185,788Top 50%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5645431 Teaching apparatus and method for visually representing mathematical expressions — 1997-07-08