ALEXANDRIA, Va., June 19 -- United States Patent no. 12,332,321, issued on June 17, was assigned to TATSUMI RYOKI Co. LTD (Tokyo).
"Load testing device" was invented by Toyoshi Kondo (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A load testing device includes a terminal unit, a main relay unit, a resistance unit, and a housing. The main relay unit and the switch group are used to switch a connection state between the first R-phase resistor group and the second R-phase resistor group between series and parallel, switch a connection state between the first S-phase resistor group and the second S-phase resistor group between series and parallel, and switch a connection state between the first T-phase re...