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Search results for: Mays, James Francis


 
  • Patent:GB146790 10.04.1919 Mays, James Francis (P) : Improvements in overthrow-preventing mechanism for calculating apparatus
  • Patent:GB146791 10.04.1919 Mays, James Francis (P) : Improvements in differential mechanism for calculating apparatus
  • Patent:GB146792 10.04.1919 Mays, James Francis (P) : Improvements in calculating apparatus for performing the operation of division
  • Patent:GB147265 10.04.1919 Mays, James Francis (P) : Improvements in transfer mechanism for calculating apparatus

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