FH

Frank D. Helman

📍 Elkhart, IN: #483 of 828 inventorsTop 60%
🗺 Indiana: #19,404 of 33,936 inventorsTop 60%
Overall (All Time): #4,073,188 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4341008 Method of registering a steel rule die and counterplate Herman Graboyes 1982-07-27