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Search results for: Liedstrand, Karl Emil Leonard


 
  • Patent:GB101224 16.08.1917 Liedstrand, Karl Emil Leonard (P) : Improvements in or relating to Cards for Statistical or similar Purposes and in Apparatus for Sorting the Cards
  • Patent:GB126624 13.05.1920 Liedstrand, Karl Emil Leonard (P) : Improvements in Cards adapted for Statistical or similar purposes
  • Patent:GB131584 19.08.1918 Liedstrand, Karl Emil Leonard (P) : Statistics, Compiling and Sorting
  • Patent:GB139477 23.06.1921 Liedstrand, Karl Emil Leonard (P) : Improvements in or relating to machines for summing up numerical data

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