CK

Cliff Keithley

📍 Dickinson, ND: #27 of 78 inventorsTop 35%
🗺 North Dakota: #797 of 2,395 inventorsTop 35%
Overall (All Time): #2,338,718 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4771559 Extruded aluminum sign frame section — 1988-09-20
4674213 Extruded aluminum sign frame section — 1987-06-23