MF

Martin B. Frank

AS American Hospital Supply: 2 patents #63 of 315Top 20%
📍 Los Angeles, CA: #4,824 of 12,377 inventorsTop 40%
🗺 California: #185,134 of 386,348 inventorsTop 50%
Overall (All Time): #2,359,784 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4474385 Removable wheel assembly for wheelchairs William D. Costello, Charles J. Helton, III 1984-10-02
4422660 Removable wheel assembly for wheelchairs William D. Costello, Charles J. Helton, III 1983-12-27