U.S. federal trademark · Serial No. 77534781 · Reg. No. 3741652
Gemological instruments, namely, electronic diamond and moissanite checkers for checking thermal and electrical conductivity of diamonds and other gemstones, electronic gemstone checkers for checking thermal conductivity and reflectivity of gemstones, electronic and digital measurement gauge for checking linear dimensions of gemstones, and electronic carat scale for checking the physical weight of gemstones
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