MELKER, RICHARD J.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5837645 Materials and methods utilizing a temporary visual indicatorExpiredJul 01, 96Nov 17, 98[B41M, A61K, B32B]
5628305 Universal ventilation deviceExpiredSep 27, 95May 13, 97[A61M]
5532029 Materials and methods utilizing a temporary visual indicatorExpiredFeb 14, 95Jul 02, 96[A61K, F42B, B32B]

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