Donald S. Lockhart

📍 Tulsa, OK: #825 of 2,344 inventorsTop 40%

🗺 Oklahoma: #4,502 of 12,736 inventorsTop 40%

Overall (All Time): #2,206,667 of 4,157,543Top 55%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
6627004	Carriage for cutting, beveling and welding torches	—	2003-09-30
5618138	Truck pallet locking device	—	1997-04-08