J. Robert Duppstadt
J. Robert Duppstadt, American mechanical engineer. Achievements include being involved in the engineering and development of nearly all of the Bell Helicopter models from 1946 until 1988; holder of numerous patents related to helicopters. Recipient Lawrence D. Bell Memorial award Helicopter Association International, 1996. Chairman Zoning Board of Adjustment, Hurst, Texas, 1968-1971. Member American Helicopter Society (vice president 1966-1968).
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