LIFE SYSTEMS, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5167254 Adsorber switching valveExpiredApr 23, 91Dec 01, 92[F16K]
5115671 Method and apparatus for analyzing rotating machinesExpiredJul 13, 90May 26, 92[G01P]
5109700 Method and apparatus for analyzing rotating machinesExpiredMay 30, 91May 05, 92[G01N]
4838901 Lightweight filterExpiredMay 17, 88Jun 13, 89[B01D]
4775484 Method and apparatus for the continuous separation of contaminants from a fluid mixtureExpiredMar 09, 87Oct 04, 88[B01D]

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