IC 009. US 021 023 026 036 038. G & S: Laboratory experimental machines and apparatus, namely, filtering machines for experimental laboratory use and membrane-type laboratory filters thereof; laboratory experimental machines and apparatus, namely, chromatography apparatus for experimental laboratory use and chromatography columns thereof
IC 011. US 013 021 023 031 034. G & S: Industrial machines and apparatus, namely, chromatograph for industrial use and chromatography columns thereof
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