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Die große Enzyklopädie des mechanischen Rechnens

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Search results for: Maybaum, Levy


 
  • Patent:FR269050 26.07.1897 Maybaum, Levy (P) : Système simple, facile et efficace pour additionner, soustraire, multiplier etc
  • Patent:GB190310187 16.07.1903 Maybaum, Levy (P) : Improvements in Combined Type-writing and Adding Machines
  • Patent:US605000 31.05.1898 Maybaum, Levy (P) : Calculating device
  • Patent:US726959 05.05.1903 Maybaum, Levy (P) : Combined writing and adding machine

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