Marshall and Wigram: Difference between revisions
From Graces Guide
Created page with "1894 Patent by James Thompson Marshall and Reginald Wigram of Steam Plough Works, Leeds, on "Improvements in Steam Engine Valves and Gear for Working them" 1900 Paten..." |
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Latest revision as of 16:48, 22 December 2024
1894 Patent by James Thompson Marshall and Reginald Wigram of Steam Plough Works, Leeds, on "Improvements in Steam Engine Valves and Gear for Working them"
1900 Patent by James Thompson Marshall and Reginald Wigram of Steam Plough Works, Leeds on "Improvements in Valve Gears for Steam Engines."
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