HS

Helen M. Slevin

📍 Concord, CA: #15 of 43 inventorsTop 35%
🗺 California: #2,144 of 10,592 inventorsTop 25%
Overall (1989): #36,678 of 140,708Top 30%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4866953 Support for knitting needles — 1989-09-19