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United States Utility Patents
4,499,180 - 4,499,189

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NumberTitle
4,499,180 Heat-developable color photographic materials with base precursor
4,499,181 Photographic recording material with indole redox releaser
4,499,182 In situ film hardening with pyridinium chlorochromate and aldehyde precursor alcohol
4,499,183 Detecting intracellular antigens in swelled and fixed cells with labeled antibody
4,499,184 Analysis for total cholesterol using lecithin:cholesterol acyl transferase (LCAT)
4,499,185 Test for esterase activity in a liquid sample
4,499,186 Diagnosing autoimmune rheumatoid arthritis by measuring proteolytic activity of .alpha..sub.2 -macroglobulin
4,499,187 Method for evaluating mutagenicity
4,499,188 Bacterial production of heterologous polypeptides under the control of a repressible promoter-operator
4,499,189 Bacteria carrying plasmid having temperature dependent plasmid copy number



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