U.S. federal trademark · Serial No. 78280996 · Reg. No. OO3O45O44
Coupling and transmission components for rotorcrafts, namely, transmission shafts, bearings and couplings for transmission shafts, and rotor head for rotary wing aircraft, for use in a flexible rotor hub between the engine, the blades and the rotor for rotary and pitch control of the blade
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