IC 016. US 002 005 022 023 029 037 038 050. G & S: Printed educational materials in the fields of fluorescence microscopy, optics, and optical filters. FIRST USE: 19941100. FIRST USE IN COMMERCE: 19941100
IC 042. US 100 101. G & S: Product engineering and scientific research and development of accessories in the fields of microscopy, fluorescence microscopy, flow cytometry, and optics, namely, optical filters, optical interference filters, neutral density filters, absorption glass filters, diffusion glass filters, glass microscope slides, microscope component parts, namely, filter cubes, retaining rings, and dichroic mirrors; design for others in the field of optical interference filters. FIRST USE: 19911200. FIRST USE IN COMMERCE: 19911200
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