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Combined display of all available logs of The Space Library. You can narrow down the view by selecting a log type, the user name (case-sensitive), or the affected page (also case-sensitive).(Latest | Earliest) View (newer 50) (older 50) (20 | 50 | 100 | 250 | 500)- 22:43, 1 April 2020 RobertG (Talk | contribs) uploaded "Image:GB439805.pdf" (Patent GB No. 439,805, “Improvements in Jet Propulsion Apparatus for Aircraft, Projectiles, and Turbine Apparatus” Leduc, R, Seine-et-Oise,France, June 6, 1934.)