CAMBRIDGE RESEARCH AND DEVELOPMENT GROUP

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4302535 Assay for mutagenesis in heterozygous diploid human lymphoblastsExpiredSep 27, 79Nov 24, 81[C12Q, C12N]
4299915 Assay for mutagenesis in bacterial cellsExpiredOct 17, 77Nov 10, 81[C12Q]
4252787 Anti-fertility composition and methodExpiredDec 27, 76Feb 24, 81[A61K]

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