Population Research Incorporated

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4207891 Dispensing instrument with supported balloonExpiredOct 10, 78Jun 17, 80[A61M]
4185618 Promotion of fibrous tissue growth in fallopian tubes for female sterilizationExpiredJun 26, 78Jan 29, 80[A61K, A61B]
4182328 Dispensing instrument and methodExpiredNov 23, 77Jan 08, 80[A61M]

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