Memory Metals, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4848388 Emergency valve with test capabilityExpiredOct 19, 87Jul 18, 89[F16K]
4840346 Apparatus for sealing a well blowoutExpiredApr 11, 85Jun 20, 89[E21B]
4778104 Temperature responsive line valveExpiredJul 03, 86Oct 18, 88[G05D]
4619320 Subsurface well safety valve and control systemExpiredMar 02, 84Oct 28, 86[E21B]
4515213 Packing tool apparatus for sealing well boresExpiredFeb 09, 83May 07, 85[E21B]
4472113 Pumping by martensitic transformation utilizationExpiredJan 22, 82Sep 18, 84[F03G]

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