HS

H. Thomas Springer

📍 Concord, NH: #1 of 10 inventorsTop 10%
🗺 New Hampshire: #88 of 409 inventorsTop 25%
Overall (1989): #109,139 of 140,708Top 80%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4858561 Pet litter enclosure — 1989-08-22