HE

Harold J. Evans

CP Central Plastics: 4 patents #3 of 22Top 15%
📍 Perkins, OK: #3 of 12 inventorsTop 25%
🗺 Oklahoma: #2,630 of 12,736 inventorsTop 25%
Overall (All Time): #1,300,840 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
4894521 Electric heating element for fusing thermoplastic materials 1990-01-16
4713129 Plastic pile protector and method of covering a pile with same James A. Inhofe, Jr. 1987-12-15
4708527 Plastic pile protector and method of covering a pile with same James A. Inhofe, Jr. 1987-11-24
4663794 Plastic pipe scraper 1987-05-12