HC

Howard F. Callis

📍 Hudgins, VA: #2 of 5 inventorsTop 40%
🗺 Virginia: #18,729 of 34,511 inventorsTop 55%
Overall (All Time): #4,042,531 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4477114 Adjustable rake head and improved handle support — 1984-10-16