May 1901 03761/1901 Improvements in valve gear for fluid pressure engines. Applied 21 February 1901, published 6 July 1901 03144/1906 Improvements in valve gear for fluid pressure engines. Applied 8 February 1906, published 7 February 1907 20911/1908 Improvements in slide and piston valves for fluid pressure, steam and other engines, with Enoch Richardson. Applied 3 October 1908, published 3 January 1910 CA124691/1910 Slide valve for fluid pressure engines US962374/1910 Valve-gear for fluid-pressure engines GB256676/1926 Improvements in or relating to motive fluid engines CA272618/1927 Motive fluid engine Death Marshall died in 1931. References English railway mechanical engineers Locomotive builders and designers 1931 deaths 1854 births People from Lincolnshire