U.S. federal trademark · Serial No. 72106941 · Reg. No. 0748078
PROTECTOR UNITS HAVING AN AIR GAP TO DISCHARGE STATIC CHARGES AND A FUSIBLE ELEMENT TO ESTABLISH A DIRECT METALLIC CIRCUIT TO GROUND FOR POWER SURGES OR FAULT CURRENTS, SAID UNITS SOLD TO TELEPHONE COMPANIES FOR USE IN TELEPHONE STATION PROTECTORS AND THE LIKE
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