The company was founded by the late billionaire and Microsoft Corp co-founder Paul Allen in 2011, and sold to private ownership in late 2019 after Allen's death. REUTERSRoc was developed by Microsoft co-founder Paul G. Allen, who died just months before it flew for the first time in April 2019. It was developed by Microsoft co-founder Paul G. Allen, who died just months before it flew for the first time in April 2019. Hypersonic describes flights at speeds of at least Mach 5, or five times the speed of sound. Hypersonic describes flights at speeds of at least Mach 5, or five times the speed of sound.
The company was founded by the dead founder of Windows.
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    :ARG0 (z1 / person
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                           :ARG1 (z3 / product
                                     :name (z4 / name
                                               :op1 "Windows")))
              :ARG1-of (z5 / die-01))
    :ARG1 (z6 / company))
The company was founded by the dead founder of Windows .
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