Claim: The utility aircraft manufactured by Beech Aircraft Corporation - a manufacturer found in 1932 at Wichita, Kansas, that had its last flight in November 15, 1949, is known as "Beechcraft Model 50 Twin Bonanza".
Evidence: November 15, 1949 
The Twin Bonanza was first flown on November 15, 1949 after rapid development, begun only in April of that year.