EV

Efrain D. Vassallo

VD Vassallo Research & Development: 2 patents #1 of 2Top 50%
📍 Ponce, PR: #1 of 2 inventorsTop 50%
🗺 Puerto Rico: #3 of 26 inventorsTop 15%
Overall (1989): #28,459 of 140,708Top 25%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4834430 Pipe socket insert Jose E. Valls 1989-05-30
4826028 Gasket seating ring Jose E. Valls 1989-05-02