DB

David F. Birch

📍 Minneapolis, MN: #2,566 of 6,114 inventorsTop 45%
🗺 Minnesota: #23,881 of 52,454 inventorsTop 50%
Overall (All Time): #2,181,201 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6908009 Handheld apparatus for semi-automatically feeding and inserting members into Braille signs Reuven Rahamim 2005-06-21
6537071 Apparatus for automatically feeding and inserting members into braille signs Reuven Rahamim 2003-03-25