12 ao???t 199231 mai 1994Aerospatiale Societe Nationale IndustrielleMethod and device for filtering the vibratory excitations transmitted between two parts especially between the rotor and the fuselage of a helicopterUS5361303 *1 avr. 19931 nov. 1994Noise Cancellation Technologies, Inc.Frequency domain adaptive control systemUS5410607 *24 sept. 199325 avr. 1995Sri InternationalMethod and apparatus