MH

Mary B. Heffernan

HP HP: 2 patents #2,312 of 7,018Top 35%
📍 Encinitas, CA: #718 of 1,440 inventorsTop 50%
🗺 California: #185,134 of 386,348 inventorsTop 50%
Overall (All Time): #2,330,201 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4885932 Determination of cleanliness level of foam reservoir Kenneth A. Norton, Bruce Cowger 1989-12-12
4824487 Cleaning of polyurethane foam reservoir 1989-04-25