IC 009. US 021 023 026 036 038. G & S: High performance liquid chromatography columns; instruments, namely, eluent degassing apparatus for high performance liquid chromatography; refractive index detector for detecting compounds having no UV absorption such as sugars, fatty acids and esters and/or for detecting compounds dissolved in eluent having UV absorption; ion chromatography instruments, namely, conductivity detectors; artificial graphite electrodes for electric steel making furnaces. FIRST USE: 19910500. FIRST USE IN COMMERCE: 19911100
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