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Bertram Edward Dunbar Kilburn
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Publication of GB191227698ApublicationCriticalpatent/GB191227698A/en
27,698. Kilburn, B. E. D., [Laur, E. L.]. Dec. 2. Drawings to Specification. Parachutes.-The spaces between the blades of a propeller are adapted to be closed by flaps for converting the propeller into a parachute.
GB191227698D1912-12-021912-12-02Improvements in or relating to Propellers for Aeroplanes and the like.
ExpiredGB191227698A
(en)