About 2 Trademarks found that are owned by Differential Engineering Inc.

Mining extraction of silver, gold, cobalt, cadmium, copper, nickel, uranium, zinc and precious and base metal extractions from heap leaching

Solution injection mining system comprised primarily of computer hardware, recorded operating software, pipes, tubes, couplings, reservoirs and fluid control members, and parts therefor

Heap leach equipment, namely mining machines, compressors and pumps for machines, and injectors for use in mining silver, gold, cobalt, cadmium, copper, nickel, uranium, zinc and precious and base metal extractions