U.S. federal trademark · Serial No. 71574033 · Reg. No. 0536065
COLORIMETERS, COLORIMETRIC COMPARATORS, DEPTH REDUCTION RODS, TEST KITS FOR DETERMINING PH, ELECTRODE PH METERS, TURBIDIMETERS, SOIL TESTERS, ROSIN COLOR COMPARISON STANDARDS, BACTERIA COUNTING APPARATUS, HEMOMETERS, HAEMACYTOMETERS, BLOOD SEDIMENTATION APPARATUS AND ACCESSORIES, STALAGMOMETERS, VISCOMETERS, MICROSCOPIC COVER GLASSES AND SLIDES, COVER GLASSES FOR POLARISCOPE TUBES, PRISMS, LENSES, PLANOPARALLEL PLATES, AND ENGRAVED MEASURING GLASSWARE FOR SCIENTIFIC PURPOSES
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