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Résultats de recherche: Clarke, Edward Russell
- Patent:DE259382 06.04.1910 Debenham, Ernest Ridley (P) und Clarke, Edward Russell (P) : Rechenmaschine
- Patent:GB190908259 06.04.1910 Clarke, Edward Russell (P) Barr Mark : Improvements in and relating to Calculating Machines
- Patent:GB191229574 18.12.1913 Clarke, Edward Russell (P) ; Debenham, Ernest Ridley (P) : Improved Method of and Apparatus for Determining the Positions of Points from their Coordinates, applicable also for use in Effecting Multiplication