U.S. federal trademark · Serial No. 76636790
Electrical test equipment for the electric power generating and transmission industry; Electrical apparatus for identification of a phase of a transmission line; Electrical apparatus for identification of a phase of a line relative to a known phase; Electrical apparatus for determining phase angle between a selected measurement point and a reference point; Portable electrical apparatus for measuring a phase relative to a known phase; An electrical reference unit and an electrical field unit for measuring a phase relative to a known phase
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