Daegu
Korea (South)
1
2020-07-09
Eun-Soo Kwon from Daegu, KR has applied for patents for these inventions. The list has both pending applications and granted patents:
METHOD FOR HEAT-TREATING UPPERMOST SURFACE OF SPHEROIDAL GRAPHITE CAST IRON AND SPHEROIDAL GRAPHITE CAST IRON HEAT-TREATED BY THE SAME
2787768 ⎘