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United States Utility Patents
4,205,920 - 4,205,929

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NumberTitle
4,205,920 Apparatus for continuously mixing sand and binder for foundry use
4,205,921 Device for homogenization of a particle filled fluid stream
4,205,922 Font and column format control system
4,205,923 Ink ribbon feed mechanism
4,205,924 Mechanical pencil with lead-feeding device operable by forward shake of pencil
4,205,925 Universal joint outer shell
4,205,926 Sucker rod and coupling therefor
4,205,927 Flanged joint structure for composite materials
4,205,928 Offshore structure in frigid environment
4,205,929 Slurry transport medium



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