U.S. federal trademark · Serial No. 78120975 · Reg. No. 2824071
SIX-PART CONNECTING SYSTEM FOR LIQUID CHROMATOGRAPHY COLUMNS (SEPARATION AND GUARD COLUMNS) COMPRISED OF TWO COUPLING NUTS WITH END-FITTINGS AND INTERIOR THREADS, TWO COUPLING SLEEVES WITH EXTERIOR THREADS AND TWO C-SHAPED CLIPS
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