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Mesa, AZ, March 14, 2004 —Demonstrator assembly passes with flying colors.

Ken Hicks, Centripetal President and CEO, announced the successful assembly of the 12" diameter, air driven, proof-of-concept demonstrator. About the assembly, Hicks said, “The high quality machine work from Rog Roc LLC, combined with thoughtful engineering enabled us to completely assemble the prototype in less than 2 hours. Rotor changes were demonstrated to be under 30 minutes. With production assembly concepts, we would expect assembly time to be less than 30 minutes and rotor changes to be under 15 minutes. This is just an example of how we value our clients maintenance needs.”

Spin testing of the demonstrator is expected to begin in April.

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