E.A. TECHNICAL SERVICES LIMITED

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7726129 Stirling cycle engineExpiredJun 10, 05Jun 01, 10[F01K, F16D, F01B]
2008/0210,194 Orbiting Piston MachinesAbandonedJun 26, 06Sep 04, 08[F01C]
7311077 Rotary positive displacement machine with orbiting pistonExpiredOct 01, 03Dec 25, 07[F02B]
7231894 Rotary positive displacement machineExpiredJan 17, 03Jun 19, 07[F02B]
6729864 Rotary positive displacement machineExpiredJan 08, 03May 04, 04[F03C]

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