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Amgueddfa Cymru – Museum Wales
Provisional Specification. Improvements in Flying Machines. No. 18,039. Date of application, 6th August 1912, Complete specification left, 6th March 1913 - accepted, 19th June 1913. Patent applied for by John George Aulsebrook Kitchen of Scotforth, Lancaster. 3 pages with three fold out diagrams containing eight figures.
