DB

Donald M. Ballard

📍 Charlotte, NC: #869 of 4,868 inventorsTop 20%
🗺 North Carolina: #10,032 of 45,564 inventorsTop 25%
Overall (All Time): #1,050,209 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
5878707 Rotary valve internal combustion engine — 1999-03-09
5690239 Multi-purpose columnar support — 1997-11-25
5299509 Connectors for shelves and bins — 1994-04-05
5085155 Shelf assembly — 1992-02-04
4242817 Holder — 1981-01-06