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| Number | Title | Issue Date |
| 6794059 | Multilayer thermal barrier coatings The present invention relates to a thin impermeable top coat on a thermal barrier coating for a metal part, such as a turbine blade, wherein the composite thin top coat is porous, inert, non-sacrificial, less permeable ceramic layer that eliminates the infiltration ... | 09/21/2004 |
| 5517852 | Diagnostic performance testing for gas turbine engines An improved gas turbine engine diagnostic system is disclosed which is particularly adapted for direct measurement of compressor performance, including efficiency and mass flow, for aircraft engines, without having to remove the engine form the aircraft. ... | 05/21/1996 |
