Williams Research, mass-producer of small turbojet and turbofan engines, built Bell-developed Jet Flying Belt and other personal lift devices, including Wasp (Williams Aerial Systems Platform) flying 2 men on single WR19 turbofan. Changed name to Williams International and proposed V-Jet small bizjet 1985 and X-Jet one-man VTOL 1986. Teamed with Rolls-Royce on bizjet engines.

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